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.
Catastrophic climate change is not inevitable. We possess the technologies that could forestall global warming. Why can't we use 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.
Creative toll strategies might make more of an impact on traffic congestion than new technologies, says a transportation researcher.
MRI can help to diagnose coronary artery disease -- clearly, accurately, and without surgery.
Ongoing and planned human tests take a promising approach to fighting cancer by boosting the immune system.