Three of Tonga's smaller islands badly damaged by tsunami

Three of Tonga's smaller islands suffered serious damage from tsunami waves, officials and the Red Cross said Wednesday, as a wider picture begins to emerge of the destruction caused by the eruption of an undersea volcano ...

Coal product used to create green clean water

Compressed blocks of pulverized coal can be used as the basis of sunlight-powered off-grid water purification. The technology is already being progressed by commercial partners toward pilot-scale production of drinking water.

page 1 from 12