To prevent massive pollution and slow its growing contribution to global warming, China will need to make advanced coal technology work on an unprecedented scale.
Some seemingly unconscious patients have startlingly complex brain activity. What does that mean about their potential for recovery? And what can it tell us about the nature of consciousness?
In his lab facing the Pacific Ocean, Daniel Morse is learning new ways to build complex semiconductor devices for cheaper, more efficient solar cells. He has an unlikely teacher: sea sponges.
By investing in energy efficiency, we could vastly reduce carbon dioxide emissions and save money.
A veteran technology commentator attempts to live entirely on Web 2.0 for two weeks.
Learning to consciously alter brain activity through MRI feedback could help control pain and other disorders.
The best scientists, scrutinizing atmosphere, ice, earth, and sea, say global warming is approaching a tipping point. But we still have time to keep it from reaching catastrophic levels.
We know where we must go eventually: toward a sustainable energy infrastructure. Why not head there now?
Better technologies exist for extracting coal, a major source of carbon dioxide emissions. The challenge is getting people to adopt them.
Genetically engineered organisms can more efficiently produce ethanol from cheap and abundant sources of biomass, such as agricultural waste. It could make ethanol cost competitive.