A new laser design helps create usable terahertz radiation, which penetrates common materials but doesn't harm tissue.
Cell-phone users can now make the ultimate long-distance call: to friends in the virtual world.
By measuring nanoscale forces, researchers learn to make lithium-ion batteries that pull themselves together.
Scientists plan to test an implanted chip with four times the resolution of the previous version in people blinded by retinal degeneration.
Two scientists think that social networks can improve disaster relief.
A 15-nanometer-thick porous silicon membrane could lead to microfluidics filters and make protein purification and blood dialysis more efficient.
A new report quantifies the electricity consumption of servers, revealing a startling trend.
3-D x-ray videos of species in motion will help scientists understand how they evolved.
Yahoo Pipes lets people make highly customized feeds that combine information from multiple sources and weed out the junk.
Better models are rapidly defining the uncertainties ahead, says leading climate scientist Ronald Prinn.