Physics
Findings could also explain why they're invisible to night-vision goggles.
Future experiments will continue to search for missing-matter particles.
Access to the past would open all sorts of new possibilities of more than travel.
Biological phenomenon could turbocharge electricity generation in solar cells.
Researchers examine Internet for evidence of travel through time.
Metal in ancient shipwrecks has value for both historians and scientists.
Survey of Spanish city data reveals patterns of change.
Bacterial proteins could alter precipitation patterns and climate-change models.
Serpentine electronics could improve performance of cars and planes.
Scientists who used computer simulations to study chemical reactions win the award for chemistry.
Francois Englert, from Belgium, and Peter W. Higgs, from the United Kingdom, are the 2013 winners.