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Muscle Atrophy: When The Body Cannibalizes ItselfDuring desperate times, such as fasting or muscle wasting that afflicts cancer or AIDS patients, the body cannibalizes itself, atrophying and breaking down skeletal muscle proteins to liberate amino acids. A new study shows that muscle atrophy is a more ordered process than was previously thought.Source: ScienceDaily: Latest Science News | 10 Jun 2009 | 12:00 am Genetic Region For Tame Animals Discovered: Horse Whisperers, Lion Tamers Not NeededIn what could be a breakthrough in animal breeding, scientists have discovered a set of genetic regions responsible for animal tameness. This discovery should help animal breeders, farmers, zoologists, and anyone else who handles and raises animals to more fully understand what makes some animals interact with humans better than do others.Source: ScienceDaily: Latest Science News | 10 Jun 2009 | 12:00 am Network Creates Virtual Super-telescopeVast quantities of data are transferred in real time from telescopes around the world to a supercomputer in the Netherlands, where researchers combine the information to create high-resolution images of distant objects in space.Source: ScienceDaily: Latest Science News | 10 Jun 2009 | 12:00 am Newly Discovered Chemical Weapon In Poison Frogs' ArsenalNew research documents a surprising chemical weapon used by some Amazonian poison frogs. The study identified for the first time a family of poisons never before known to exist in these brightly colored creatures or elsewhere in nature: the N-methyldecahydroquinolines. The authors then speculated on its origin in the frogs' diet, most likely ants.Source: ScienceDaily: Latest Science News | 10 Jun 2009 | 12:00 am Insomnia With Objective Short Sleep Duration In Men Is Associated With Increased MortalityMen with insomnia and sleep duration of six or fewer hours of nightly sleep are at an increased risk for mortality, according to a new research.Source: ScienceDaily: Latest Science News | 10 Jun 2009 | 12:00 am Concussion Experts: For Kids -- No Sports, No Schoolwork, No Text MessagesWhen it comes to concussions, children and teens require different treatment, according to international experts. The new guidelines say children and teens must be strictly monitored and activities restricted until fully healed. These restrictions include no return to the field of play, no return to school, and no cognitive activity.Source: ScienceDaily: Latest Science News | 10 Jun 2009 | 12:00 am Discovery Raises New Doubts About Dinosaur-bird LinksResearchers have made a fundamental new discovery about how birds breathe and have a lung capacity that allows for flight -- and the finding means it's unlikely that birds descended from any known theropod dinosaurs.Source: ScienceDaily: Latest Science News | 9 Jun 2009 | 9:00 pm Thinnest Superconducting Metal Ever CreatedA superconducting sheet of lead only two atoms thick, the thinnest superconducting metal layer ever created, has been developed by physicists.Source: ScienceDaily: Latest Science News | 9 Jun 2009 | 9:00 pm Defeating Nicotine's Double Role In Lung CancerA lung cancer treatment that inhibits nicotine receptors was shown to double survival time in mice, according to new research.Source: ScienceDaily: Latest Science News | 9 Jun 2009 | 9:00 pm Common Chemotherapy Drug Can Trigger Fatal Allergic ReactionsA chemotherapy drug that is supposed to help save cancer patients' lives, instead resulted in life-threatening and sometimes fatal allergic reactions. A new study identified 287 hypersensitivity reactions and 109 deaths in patients who received Cremophor-based paclitaxel, a solvent-administered chemotherapy. Two patients who died from an allergic reaction had highly curable early-stage breast cancer. The allergic reactions are believed to be caused by the solvent, and the actual number of deaths is likely higher.Source: ScienceDaily: Latest Science News | 9 Jun 2009 | 9:00 pm Flu originsWhy some link swine flu to intensive farmingSource: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 3:13 pm Look Out! Computer Injuries Spike (LiveScience.com)LiveScience.com - Computer geeks and their children are in danger. New research reveals that injuries caused by tripping over computer equipment or taking a hit in the head from a falling monitor are on the rise.Source: Yahoo! News: Science News | 9 Jun 2009 | 3:03 pm Fish's offShould you take tuna off the menu before it's too late?Source: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 2:56 pm Look Out! Computer Injuries SpikeComputer injuries are on the rise.Source: Livescience.com | 9 Jun 2009 | 2:52 pm Too little sleep raises blood pressure risk: studyCHICAGO (Reuters) - Middle-aged adults who get too little sleep are more likely to develop high blood pressure, U.S. researchers said on Monday.Source: Reuters: Science News | 9 Jun 2009 | 2:36 pm New Book Brings Readers Face-To-Face With First Moonwalker (SPACE.com)SPACE.com - Ever since Neil Armstrong took his "one giant leap" onto the moon's surface forty years ago this July, the world has never gotten a good look at him during that momentous event. Neither the fuzzy black-and-white TV images transmitted to Earth, nor the handful of still photos taken of him on the moon show Armstrong well. Now, in a new book by Apollo historian Andrew Chaikin, a new image of the Apollo 11 astronaut taken early in the moonwalk brings readers face-to-face with Armstrong on the moon. ...Source: Yahoo! News: Science News | 9 Jun 2009 | 2:15 pm Nigeria victims hail $15.5 mln Shell payout (AFP)
Source: Yahoo! News: Science News | 9 Jun 2009 | 2:11 pm Giant black holes just got biggerSome of the biggest black holes in the nearby Universe may be much larger than previously thought, astronomers say.Source: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 1:53 pm Vast Bed of Ancient Bones and Shark Teeth ExplainedSharktooth Hill Bone Bed looks like a giant marine killing field.Source: Livescience.com | 9 Jun 2009 | 1:25 pm Bird Flu Survives in LandfillsBird flu can survive for up to two years in bird carcasses that have been dumped into landfills.Source: Discovery News Top Stories : Discovery Channel | 9 Jun 2009 | 1:20 pm This government views science simply as a tool for generating profitIt's difficult to see the assimilation of science into Peter Mandelson's new Department for Business, Innovation and Skills as anything but bad news As the dust settles following Gordon Brown's cabinet shuffle on Friday, it's clear that the landscape of British science has been transformed. Where the Department for Innovation, Universities and Skills once stood, now only a vacant lot and several skips filled with DIUS-branded stationery remain. If the forwarding address is oddly familiar – 1 Victoria Street – it's because this was the home of the Department for Trade and Industry, from whose malign influence the science escaped just two years ago. Science has had a tough time fitting into the Westminster scene. Batted between various business and education departments for decades, it finally came to rest as the Office of Science and Innovation within the Department for Trade and Industry. In 2007, the DTI became the Department for Business, Enterprise & Regulatory Reform, and science was turfed out again, this time combining with fragments of the Department of Education to form DIUS. On Friday, the Downing Street website carried the official announcement that the DIUS and BERR would be glued together to form the Department for Business, Innovation and Skills, headed by Peter Mandelson. It's difficult to see this as anything but bad news for science in Britain. The first wholly new government department in 20 years, the DIUS struggled to find its feet. It was criticised by the House of Commons Innovation, Universities, Science and Skills Committee for scoring poorly in several areas, and we had to wait 18 months just for a fully-functioning website. However, the committee also noted that the staff and management were working hard under difficult circumstances to respond to these problems. Phil Willis, the IUSS chairman who oversaw the DIUS, writes of its dissolution:
During their previous cohabitation, the DTI provoked outrage by lifting £68m from the Office of Science and Innovation's budget to solve its own crisis, the ailing MG Rover firm. It is therefore essential that we have a strong committee to defend science from corporate raids such as this, and to guide and protect science policy. At the time of writing, however, oversight of science policy in the UK depends entirely on business minds. This is an unfortunate development, but not an unexpected one. There has been a growing consensus among ministers (including John Denham, who previously headed the DIUS) that funding for science should be directed at the most commercially profitable areas. In February, Chancellor Alistair Darling's 2009 Budget went as far as to force the research councils to re-allocate over £100m of funding to areas with "predicted economic potential", sparking an outcry from scientific groups. Nick Dusic of the Campaign for Science and Engineering commented:
It's clear that there are few politicians in the upper levels of government who value science as anything more than a tool for profit generation. Indeed, it's particularly telling that the decision has not been taken to reunite universities with other education departments, suggesting the government prefers to view these as business enterprises rather than research institutions. As discussed previously on these pages, party manifestos brim with references to science's role in a knowledge-based economy, with scant mention of the inherent value of research. This reductionist view is misguided for two reasons. First, the nature of science is one of discovery, and it's not always possible to predict the outcome of research. Many of the world's greatest scientific discoveries – penicillin, Viagra, Teflon, microwave ovens, inkjet printing, safety glass, X-rays – have been serendipitous. And as Martin Robbins points out, it's not easy to assess the qualities of a science without having experts on hand. Second, it's a wholly uneconomic approach to carry out research that private institutions would be willing to invest in anyway – especially when the fruits of research may not be obvious from the outset. When lasers were first demonstrated in 1960, they were derided as "a solution looking for a problem", yet today it's hard to imagine life without them. Public funding, like public broadcasting, should exist to support areas ignored by commercial bodies. It's too early to know how drastic the effects of these changes will be, but with a general election looming on the horizon, we have the opportunity to push this issue to the forefront of political discussion. Science needs to be a guiding force in UK politics, not a footnote in its business ledger. Frank Swain is a freelance writer and blogger. He runs SciencePunk.com guardian.co.uk © Guardian News & Media Limited 2009 | Use of this content is subject to our Terms & Conditions | More Feeds
Source: Science news, comment and analysis | guardian.co.uk | 9 Jun 2009 | 1:01 pm Caribbean system has low chance to develop: NHCNEW YORK (Reuters) - The U.S. National Hurricane Center said Monday that cloudiness, showers and thunderstorms over the southwestern Caribbean Sea were associated with a surface trough, but there was less than a 30 percent chance the system would develop into a tropical cyclone over the next 48 hours.Source: Reuters: Science News | 9 Jun 2009 | 12:56 pm China response to Obama climate envoy positive (AP)
Source: Yahoo! News: Science News | 9 Jun 2009 | 12:22 pm US climate envoy in China on emissions cuts (AFP)
Source: Yahoo! News: Science News | 9 Jun 2009 | 11:47 am US, Europe look to partnership on Mars exploration (AP)
Source: Yahoo! News: Science News | 9 Jun 2009 | 10:41 am The Nation's Weather (AP)
Source: Yahoo! News: Science News | 9 Jun 2009 | 10:20 am Fuel emissions focus 'too narrow'Policymakers must consider more than just "tailpipe emissions" when considering the impacts of transport, say researchers.Source: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 10:11 am Life with a little known monkeyA BBC film crew living in a treehouse has filmed a troop of elusive red-capped mangabeys living in the forests of Gabon.Source: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 9:02 am In the limelightBasking sharks' annual migration to CornwallSource: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 4:53 am Australia wind farm gets go-aheadApproval has been given for Australia's biggest wind farm to be built near Broken Hill in New South Wales.Source: BBC News | Science & Environment | UK Edition | 9 Jun 2009 | 3:42 am Home Test for Fetus Gender Raises Abortion ConcernsYou just collect some urine, swirl it in the test vessel, and in 10 minutes you'll know.Source: Livescience.com | 9 Jun 2009 | 12:15 am Study Shows How Snakes SlitherResearchers found that snake scales are crucial in allowing snakes to slither.Source: Livescience.com | 8 Jun 2009 | 11:21 pm Nuclear fusion power project to start in slimmed-down version (AFP)
Source: Yahoo! News: Science News | 8 Jun 2009 | 11:15 pm Mobile scanner could detect gunsUK scientists develop a portable microwave scanner to help police identify individuals carrying concealed guns and knives.Source: BBC News | Science & Environment | UK Edition | 8 Jun 2009 | 11:12 pm Is there life beyond the tuna sarnie?So it's come to this. Pret a Manger is taking bluefin tuna out of its sandwiches and sushi boxes to help save fish stocks. If we're worried about tuna, what can take its place in kids' sandwiches? Actually, the secret of the tuna sandwich isn't the tuna. It's the sweetcorn, which gives nuggets of sweetness; and the mayonnaise, which gives the squelch factor. Here are a few ideas. The salmon option: 1 Tinned farmed or Pacific salmon might just slip past your child's taste sentinels. My suggestion is 4tbsp mayonnaise: 200g salmon: 4dtsp frozen or tinned sweetcorn. The salmon option: 2 Salmon and cucumber can appeal to the more sophisticated by adding two dashes of Tabasco Jalapeno or ¼tsp cayenne to the salmon. Cover with thin slices of peeled cucumber. Eat rapidly before the bread goes soggy. The shellfish option Simplicity itself - 150g fresh white crab meat: 50g fresh brown crab meat: 2tbsp mayonnaise: squeeze of lemon: a sprinkle of cayenne pepper; salt and pepper. The sardine option Pilchards are in plentiful supply off Cornwall. Lay the fillets on the bread (or better, toasted baguette) or mash them up and spread the resulting mush all over. Then cover with slices of ripe tomato, salt, pepper and chopped chives. Eat in moderation lest we bring yet another species to the brink of extinction. guardian.co.uk © Guardian News & Media Limited 2009 | Use of this content is subject to our Terms & Conditions | More Feeds
Source: Science news, comment and analysis | guardian.co.uk | 8 Jun 2009 | 11:01 pm The magic numbersProfessor Ian Stewart persuades Jessica Shepherd that maths can be fun - with a bit of help from Terry Pratchett From the age of 14, Ian Stewart would scour newsagents' shelves for his monthly fix: the maths puzzle in the Scientific American. From the column Mathematical Games he'd learn rudimentary artificial intelligence: how to make a robot from 25 matchboxes and 116 jellybeans. He'd acquire basic geometry: how to link different wooden shapes so they'd create the perfect cube. And he'd pick up a skill for which 50 years later he'd be rewarded: how to entertainingly communicate maths to the public. Today, at the Science Museum in London, Stewart, professor of maths at the University of Warwick, will receive the Christopher Zeeman medal for public engagement in mathematics. It will be the first medal specifically given to a mathematician in the UK for promoting maths to the public. Recognition of Stewart's gift in communicating "the scope, power and sheer joy" of being a mathematician is long overdue, says David Abrahams, president of the Institute of Mathematics. In his early teens, Stewart stored in notebooks the mathematical conundrums he came across in Scientific American and elsewhere. "I'd collect the columns until piles of them in my bedroom drove my mother mad," he says. Fast-forward eight years to 1967 and, as a PhD student, Stewart was co-editing a magazine for maths undergraduates at Warwick. Manifold's philosophy was: "It's possible to be serious about maths without being solemn." Copies went like hot cakes. When the first batch of 200 ran out, another 150 were hastily printed from a duplicator in a university kitchen at 1am. By the age of 37, Stewart was combining lecturing with writing maths comic books. Jump another eight years and he was editing the same column in Scientific American that he'd looked out for on newsagents' shelves all those years ago. Maths minds from across the world shared with him their riddles, from the quantum mechanics of a cat-flap patent to the complex shapes of digital sundials. Soon, Stewart had amassed enough mathematical games, stories, puzzles and facts to embark on a writing career to run parallel to his now international research reputation in the field of dynamics. Publishers say he is one of the world's most famous and best-loved writers on maths for books such as Does God Play Dice?, How to Cut a Cake, and collaborations with the science-fiction writer Terry Pratchett. "A tasty assortment of numerical nibbles" is how Stewart describes his latest book, Professor Stewart's Cabinet of Mathematical Curiosities, which was published last year. In January, the book was number six on Amazon's UK bestsellers chart, sandwiched between Barack Obama's life stories. Stewart's accolade today comes eight months after mathematician Marcus du Sautoy was chosen to succeed Richard Dawkins as chair in the Simonyi Professorship for the Public Understanding of Science at Oxford University. It's also less than a year since the statistician Adrian Smith took up his post as director general for science at the Department for Innovation, Universities and Skills. The calculus-incompetent among us had better watch out, for a growing club of maths popularisers is forming. About time, too, says Stewart. Public engagement "If you go back 30 or 40 years, maths was almost monastic in the way it conducted itself," he says. "Public engagement was frowned upon. It was almost as if you were cheating by doing it; you were getting lots of exposure from other people's work. The done thing was to publish your papers in journals and let the maths community read them in libraries. But it's changing now." There's more of an appetite for popular maths now, he says. The population is more educated; the media is more broad-minded. He cites recent success stories such as the film A Beautiful Mind, about an economics Nobel laureate who develops paranoid schizophrenia, but refuses to take drugs to control it because he says the side-effects would make his re-entry into the world of maths a near impossibility. Then there was Good Will Hunting, a film about a caretaker with a hidden gift for maths, and, of course, Stephen Hawking's book A Brief History of Time, which attempts to explain some complex maths and has sold more than 9m copies. But hasn't Stewart had any stick from the maths community for his popular books, and more than 80 TV and 310 radio appearances? "No," he insists. "I've had support from colleagues all the way up to the vice-chancellor. There's a concern among the maths community that the wider population doesn't know that, just as in science, new maths is being discovered all the time. "Most researchers are being told to do at least a little public engagement, such as giving talks in schools. Of course, not everyone is lucky enough to be in a field that can be popularised, or can do public engagement." So how is it done? "For goodness sake, don't show the public a calculator or formulae," he says. Hawking's editor would no doubt agree. Hawking is rumoured to have been warned that for every equation in his book A Brief History of Time, the readership would be halved. Just one was allowed in the end: E=mc2 "The most important thing is to put yourself in the shoes of someone who doesn't understand the subject," Stewart says. "The truth is that most people did maths GCSE because they had to; they didn't enjoy it. It's about giving people a feel for what's going on in maths and telling them that new maths is being uncovered." Stewart believes his core audience will be "educated Radio 4 listeners who are not necessarily very maths literate". What works, he says, is when you tell a story or start with an observation. "Have you ever noticed the pattern in the way a horse gallops?" he asks. "Or I might give them a brief history of symmetry from the ancient Babylonians to the discoveries made by quantum physicists last year. Maths is such a pedantic, precise subject. You can't get that over to anyone who hasn't been trained in it. You have to simplify." But not too much. Stewart believes the BBC's flagship science programme, Horizon, is "not what it used to be". "They are going for a broader audience, which is good, but they have neglected their scientifically literate audience," he says. Below the surface He wants to broaden maths' appeal from "the mathematically educated" to those who are "very educated, but a bit anti-science". "It can be done," he says. "Our entire society runs on maths that is hidden just below the surface. "How does a digital camera store so many images on a card that doesn't have enough memory to contain them? The answer is mathematical data compression methods. And how do we send credit card numbers securely online? The answer is mathematically based codes." Another effective way to communicate maths is through science fiction, Stewart has found. Pratchett's novels are set in Discworld, a universe 10,000-miles long that is the shape of a disc and rests on the backs of four giant elephants supported by a giant turtle. Stewart has collaborated with Pratchett and reproductive biologist Jack Cohen to produce three books on the science of Discworld. A fourth has been on hold since Pratchett was diagnosed with Alzheimer's disease. Teachers regularly write to Stewart to tell him they use parts of the books in their science lessons. But, he admits: "I'm not very good at engaging with children in schools. I like a big audience." Stewart has his sights set on a global audience when he retires to become emeritus professor at Warwick in October and concentrates more of his time on public engagement. Last month, he posted a maths puzzle on Twitter: "Diophantus's childhood lasted one-sixth of his life," the puzzle reads. "His beard grew after one-twelfth more. He married after one-seventh more. His son was born five years later. The son lived to half his father's age. Diophantus died four years after his son. How old was Diophantus when he died?" "That's just the kind of numerical nibble I love," he says. Curriculum vitae Age 63 Job Professor of mathematics with special responsibility for public understanding of science, University of Warwick Likes tigers, volcanic islands Dislikes Paris Charles de Gaulle airport, creationists Married for 38 years, two sons guardian.co.uk © Guardian News & Media Limited 2009 | Use of this content is subject to our Terms & Conditions | More Feeds
Source: Science news, comment and analysis | guardian.co.uk | 8 Jun 2009 | 11:01 pm U.S. lawmaker urges action on generic biotech drugs (Reuters)
Source: Yahoo! News: Science News | 8 Jun 2009 | 10:05 pm Risk Factors for Heart Attack Pinned DownIf you smoke, are overweight or have diabetes or high blood pressure, doctors have a fresh warning for you.Source: Livescience.com | 8 Jun 2009 | 9:46 pm Astronauts Gear Up for Space Construction Marathon (SPACE.com)SPACE.com - Seven astronauts are gearing up for what they expect to be a grueling orbital construction mission to the International Space Station this week aboard the shuttle Endeavour.Source: Yahoo! News: Science News | 8 Jun 2009 | 9:15 pm Green Transport Not Always So GreenFiguring out which mode of transportation is greener is complex.Source: Livescience.com | 8 Jun 2009 | 8:46 pm Study Finds 4 Things That Keep Old Minds SharpA new study reveals several factors that may help people keep their minds sharp as they age.Source: Livescience.com | 8 Jun 2009 | 8:19 pm Huge Cosmic Explosions Are Dark and Mysterious'Dark' gamma-ray bursts hidden behind dust, reveal star formation.Source: Livescience.com | 8 Jun 2009 | 8:03 pm New Method Measures Astronomical DistancesNew technique could help astronomers measure the rate of expansion of the universe.Source: Livescience.com | 8 Jun 2009 | 8:02 pm Astronomers Take Step in Measuring Universe's ExpansionNew finding could help determine Hubble Constant.Source: Livescience.com | 8 Jun 2009 | 7:59 pm Peru finds human sacrifices from Inca civilizationLIMA (Reuters) - Researchers at an archeological site in northern Peru have made an unusually large discovery of nearly three dozen people sacrificed some 600 years ago by the Incan civilization.Source: Reuters: Science News | 8 Jun 2009 | 7:08 pm The Secret to Roundworm Longevity: Sex Cells
The secret to immortality may be sex — cells, that is. The cells of especially long-lived roundworms run some of the same genetic programs found in sperm and egg cells. Known as germline cells, they can replicate indefinitely without wearing down, and have fascinated researchers seeking lessons in their longevity. Other, so-called somatic cells rapidly accumulate genetic and mechanical damage, and divide roughly 50 times before dying. Exactly why germline cells live so long isn’t completely understood. They do possess unusually large telomeres — protein caps on the ends of chromosomes that prevent those genetic spools from unraveling. They also possess mutations in genes linked to fighting off pathogens and repairing toxin damage. In a study described Sunday in Nature, researchers compared gene expression in germline cells with somatic cells taken from roundworms engineered to live several times longer than normal. The profiles matched. When long-lived and standard roundworms were exposed to pollutants, cells from the former escaped relatively unscathed. And when the researchers turned those typically-germline genes off, the worms’ lifespans returned to normal. Whether the same mechanisms work in humans remains to be seen, but the prospect is tantalizing. “Given that protection of the germ line is an evolutionarily shared trait across species, it will be interesting to investigate whether this is a broadly conserved mechanism of modulating lifespan,” wrote the researchers. If so, then those mutations could be used in therapies that “assist in cellular repair and possibly regeneration,” they wrote. See Also:
Citation: “A soma-to-germline transformation in long-lived Caenorhabditis elegans mutants.” By Sean P. Curran, Xiaoyun Wu, Christian G. Riedel & Gary Ruvkun. Nature, Vol. 459 No. 7248, June 8, 2009. Image: Nature Brandon Keim’s Twitter stream and Del.icio.us feed; Wired Science on Facebook.
Source: Wired: Wired Science | 8 Jun 2009 | 7:00 pm Human Ear Inspires Universal Radio AntennaA low-powered radio chip, modeled on the human ear, can receive any radio signal.Source: Discovery News Top Stories : Discovery Channel | 8 Jun 2009 | 6:30 pm BIG PIC: Giant Jellyfish Taking Over OceansGiant jellyfish take over parts of the oceans as human activities offer opportunities.Source: Discovery News Top Stories : Discovery Channel | 8 Jun 2009 | 5:03 pm Air France Tail FoundA large tail section from the crashed Air France jet is found in the Atlantic.Source: Discovery News Top Stories : Discovery Channel | 8 Jun 2009 | 5:00 pm Feedbag: How Sardines Can Save the WorldListen to a podcast about some of the most unusual stories of the week.Source: Discovery News Top Stories : Discovery Channel | 8 Jun 2009 | 4:23 pm Saving the seasWhales' futures depend on vast marine reservesSource: BBC News | Science & Environment | UK Edition | 8 Jun 2009 | 4:12 pm SLIDE SHOW: How We've Changed AntarcticaEven though Antarctica is mostly inhabitable for humans, we've left our mark.Source: Discovery News Top Stories : Discovery Channel | 8 Jun 2009 | 4:00 pm Machu Picchu Described as Pilgrimage SiteMachu Picchu is described not as a city, but as a pilgrimage destination.Source: Discovery News Top Stories : Discovery Channel | 8 Jun 2009 | 3:30 pm Secrets of the seaMore questions than answers, one week after crashSource: BBC News | Science & Environment | UK Edition | 8 Jun 2009 | 3:25 pm
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