Background on this week's stories:
Andrew Revkin of the New York Times wrote it up on his blog Dot Earth. Alexis Madrigal at Wired wondered if a map like this might be used to convince politicians to reverse their opposition to caps on carbon emissions.
# 2. Turning pollution into DVDs?
Carbon dioxide captured from the smokestacks of power plants could one day provide the raw material for plastics, says our environment correspondent. Jessica Marshall of Discovery News follows up with a few additional details.
# 3. The real "nano" deal
If you're curious about nanotechnology in general, we have an endless bounty of coverage on the subject at our newly-launched topic page on nanotechnology, which even as its own nanotechnology-specific RSS feed.
In this week's story on the subject, the tiny particles of silver embedded in socks to fight bacteria may also be harming wildlife, says a paper outlining how it might be taken up through the gills of rainbow trout. (Here's an American Chemical Society press release on that paper.)