Scientists believe light transformed to matter shortly after the Big Bang. Two UK physicists say they now know how to change light to matter here on Earth.
No ocean-borne radiation from Japan’s Fukushima nuclear power plant disaster has yet been detected in analysis of kelp samples along the western U.S. coastline.
Here's why climbers use supplemental oxygen to climb Mount Everest. Also, the curtailment of the 2014 Everest climbing season following a deadly avalanche.