Tectonics Slowdown
Some researchers think plate tectonics may have come to a stop at different times in the past.
Some researchers think plate tectonics may have come to a stop at different times in the past.
Scientists have invented a material three times darker than the previous world record.
Our memory is closely linked to our imagination; and daytime naps help us remember what we learn.
Geology Special: glowing diamonds, intermittent plate tectonics and preventing a helium shortage.
Global helium resources are dwindling, and there'll be no substitute if we run out.
Space Research Update: the 11-year solar storm cycle returns, the MESSENGER spacecraft reports back …