It’s no Eyjafjallajokull (neither when measured by impact of eruption, nor in difficulty of pronunciation), but Iceland’s Grimsvötn volcano is still establishing a visual presence over the North Atlantic. You can even see it from space. The animation below shows Grimsvötn’s plume piercing the cloud layer above Iceland and spreading its ash plume in the atmosphere above it.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.