A mobile container from Rice University sterilizes surgical instruments in low-resource settings. The "Sterile Box," built into a standard 20-foot steel shipping container, houses a water system for decontamination and a solar-powered autoclave for steam sterilization.

In 1974, Sherwood Rowland and Mario Molina discovered that chlorofluorocarbons (CFCs) were depleting the ozone layer, and in 1995, they received the Nobel Prize in Chemistry for this work. In response, the United Nations Environment Programme called an international conference to discuss the issue. Shortly...

Stem cells, both embryonic and adult, promise to revolutionize the practice of medicine in the future. In order to realize this potential, a number of hurdles must be overcome. Most importantly, the signaling mechanisms necessary to control the differentiation of stem cells into tissues of interest remain...