Ollabelle writes: It's always been a bit of a mystery why plants absorb red and blue light while reflecting green when the sun emits the most visible light in the green part of the spectrum. Now a theory has come up with one possible answer: that the first chlorophyll-utilizing microbes evolved to exploit the red-and-blue reflected light of older green-absorbing microbes, eventually out-competing them through greater efficiency and the rise of oxygen.
http://www.livescience.com/environment/070410_purp le_earth.html
[note to editor: I'm baffled how to tag this story to science, and nothing else. All the "topics" seem to be anything except 'off topic'. Thanks for any insight you can give.]
CodeWeavers' CrossOver Mac is unique among virtualization programs in that it doesn't actually require a copy of Windows. That's right: once you've paid CodeWeavers your $60 ($70 for a CD), you're ready to start installing Windows programs, without paying Microsoft a dime.