This completely biological man-made leaf only needs light and a little water to produce oxygen for astronauts on long space voyages.
36-Hour Precipitation Outlook
How fitness trackers can help you succeed
These gadgets can be a real help in tracking your progress.
Time Lapse Tuesday: Terra Sacra
Weather helps showcase these remote landscapes and iconic ancient monuments.
Ebola outbreak 2014: Should we be worried?
The Ebola outbreak in western Africa is the worst epidemic on record. Should we ...