38905793
submission
Ollabelle writes:
David Bernstein, a nonprofit executive who lives in Gaithersburg, Md., has two sons, ages 7 and 15. He has previously written about how schools fail students with Attention Deficit Hyperactivity Disorder. Now he turns his attention to mandated curriculum in public schools, and argues that his sons shouldn't be forced to take any science class.
142607
submission
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.]
137571
submission
Ollabelle writes:
The BBC is reporting how tiny chips with flexible skins could be used to glide through a planet's atmosphere in swarms to gather data and report back.
http://news.bbc.co.uk/2/hi/science/nature/6566317. stm
