New tech at Mobile World Congress could let you charge your phone when it's out in the sun or even under room lights.

A Columbia microbiologist, he popularized “vertical farming” — raising crops in tall buildings — to remediate climate change and feed more people. By Trip Gabriel Dickson Despommier ...

The government has funded science and then largely left well enough alone. Scientific agencies have been staffed by scientists; scientists have set scientific priorities; scientists have ensured ...