[Science] China's self-billed No 1 environmentalist gives away fresh air

China's self-billed No 1 environmentalist gives away fresh air
http://www.guardian.co.uk/world/2013/jan/31/china-smog-environmentalist-fresh-air-stunt
Link to video: Chen Guangbiao: 'Come on, two cans for one - free fresh air'. Even through the soupy Beijing smog, it is impossible to mistake the ebullient figure shaking hands, signing autographs and barking at startled passersby: "Come on, two cans for ...

Water Once Flowed Beneath Martian Surface
http://www.skyandtelescope.com/news/Water-on-Mars-Again-189191801.html
Fossilized wrinkles in impact craters suggest once again that water might once have flowed on Mars - this time, beneath the surface.

Environmental Risk: The Changing Climate: Pricing climate change
http://hereandnow.wbur.org/2013/01/31/obama-climate-change
The physical and regulatory risks from climate change already exist. But Nina Röhrbein finds that the pricing signals remain suppressed by still-evolving regulatory frameworks and a lack of data.