Art Griggs

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Scientists discover DNA body clock

Newly discovered mechanism could help researchers understand ageing process and lead to ways of slowing it down<p>A US scientist has discovered an internal body clock based on DNA that measures the biological age of our tissues and organs.<p>The clock shows that while many healthy tissues age at the same …

Living on $5,000 a year, on purpose: Meet America's 'intentional poor' - In Plain Sight

Take a look at Dan Price's ultra-cheap lifestyle, starting with the home he built from scrap wood that he calls his 'hobbit hole.'<p><i>By Nona Willis Aronowitz, NBC News contributor</i><p>More than two decades ago, then-33-year-old Dan Price had a wife, two small children, a high-interest mortgage, and a …

Nasa Curiosity rover tests suggest life may have existed on Mars

Curiosity rover finds ancient network of rivers on Mars that could have made parts of the planet habitable for microbial life<p>An ancient network of rivers on Mars once made parts of the planet habitable for microbial life, according to the latest analysis from Nasa's Curiosity rover.<p>Rock dust …

Mission to the Mars Desert Research Station in Utah – in pictures

Photojournalist Jim Urquhart always wanted to go into space. Here he comes close to his dream, documenting a team of scientists who are using the Utah desert as a dry run for future missions to Mars

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