drinking water

The story of three impressive high school science projects. Can you guess which student won $250,000 in the #RegeneronSTS? Applications open June 1: This video was sponsored by Regeneron. The Science Talent Search was founded and…

Guardian India correspondent Michael Safi takes a journey along the Yamuna river. Stretching 855 miles (1,375km) across the north of the country, at its source in the Himalayas its water is crystal clear. Subscribe to The Guardian ►…