Keyboard Access Tips

To play Science in Action - Water on Mars you need to enable JavaScript. How?

Science in Action - Water on Mars

Strong geological evidence for liquid water on Mars in the past; Genetic clues to the domestication of dogs; Classifying Earth's biodiversity – taxonomic challenges

Strong geological evidence that Mars once had liquid water on its surface has been revealed this week. Scientists analysing data sent back from NASA and ESA Mars orbiters say that the McLoughlin Crater, caused by a meteor impact millions of years ago, was probably once filled with water. It is likely that the water originated deep under the surface of the Red planet, where microbial life could have lurked. Domestication of dogs New genetic analysis of dogs and their pack-hunting ancestors shed light on how dogs descended from wolves, from behavioural changes to dietary adaptation. Cataloguing life on Earth How many of Earth's plants and animals still need to be discovered and classified? Not as many as some people think. A review in the journal Science this week, states that there are enough professional taxonomists and amateurs looking for, and classifying new species around the world to be able to complete the job by the end of this century. It'll take some funding, but if we know what we have to lose, we might take better care of it. (Photo credit: NASA/Getty Images)

  • Broadcast on BBC World Service, 11:32AM Fri, 25 Jan 2013
  • Available until 12:00AM Thu, 1 Jan 2099
  • First broadcast BBC World Service, 7:32PM Thu, 24 Jan 2013
  • Categories
  • Duration 18 minutes

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.