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 Features The technology of athletics tracksThough the high-tech swimsuits being used in the 2008 Beijing Olympics are getting most of the press, research shows that applying advanced technology to running tracks might help break records too.  China's Olympian efforts to tackle pollutionAs the 2008 Beijing Olympic Games get underway, an expensive environmental experiment is taking place, providing a golden opportunity for pollution science.  Cosmic rouletteAs physicists around the world are staking the lot on the Large Hadron Collider, we review the odds of success.  Solar sailingSolar sails would allow a spacecraft to be propelled by the gentle pressure of light itself. It sounds like a fantastical concept, but with two missions imminently due to practically test the idea, it's edging towards reality.  Silent springDeep in the radioactive bowels of the smashed Chernobyl reactor, a strange new lifeform is blooming.  Mapping the evolution of the cosmosA new telescope in the Australian outback, promises to answer big questions about the history and fate of the cosmos. By focusing on distant objects, it will peer back in time, almost to the Big Bang 13.7 billion years ago.  Bird flu: A dead duck?Health officials warned of a major bird flu pandemic ripping across the world as early as 2004. But it still hasn't happened. Was it scaremongering? Statisticians pick over the evidence.  The many worlds of Arthur C. ClarkeHe was many things - an engineer, a thinker, a novelist. But Arthur C. Clarke was most of all a visionary who had an incalculable influence on space travel, space exploration, and astrobiology.  Enzymes made to orderIn a world first, scientists have managed to synthesise entirely new functional enzymes that could pave the way to reactions not seen in the natural world.  Becoming immortalWithin a few decades, we might reasonably expect to have extended life to 150 years or more – the first human to live to 1,000 may have already been born. But, does death give meaning to our lives? Where do we go from here?  Next stop: MarsWhat will it take to plant booted feet on Martian soil? And what will it take to keep them there indefinitely? We set our sights on the Red Planet.  Six things you didn't know about human missions to MarsWhy the first astronauts to Mars may never come back, why a Martian colony is unlikely to revolt against Earth and more...  Mars exploration: a timelineOnly about half of the attempted missions to Mars have been successful. Here we bring you a timeline of our encounters with the Red Planet.  From 'gay plague' to global tragedyThe AIDS battle marks an important anniversary this week, bringing to mind victories of science and human spirit but also defeats, stigma and ignorance. 
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