Ethanol test for Obama on climate change, science

(AP) -- President Barack Obama's commitment to take on climate change and put science over politics is about to be tested as his administration faces a politically sensitive question about the widespread use of ethanol: ...

Nanotechnology holds promise for STD drug delivery

Yale researchers describe a breakthrough in safe and effective administration of potential antiviral drugs — small interfering RNA (siRNA) molecules that silence genes — the first step in development of a new kind of ...