Unrestricted ocean fertilization may invite disaster, says MIT environmental expert.
Taking a cue from Europe and Japan, the U.S. gets on track with high-speed trains.
Getting "precision agriculture" off the ground may require a better way to look beneath it.
How zinc-air batteries work.
Lithium polymer batteries eventually may squeeze into any shape and go anywhere.
The pioneer of online collaboration explains why peer-to-peer tools are the future.
Is ocean thermal energy conversion finally ready to pump up?
We round up this week's most intriguing items from around the Web.