A pair of geologists with the U.S. Geological Survey, Denver, has created a model that shows Earth's subsurface may hold up to 5.6 × 10 6 million metric tons of natural hydrogen. In their study, ...
Image showing a "picture" of the Earth's interior. The colour represents how fast the seismic waves travel inside the Earth in the Alaska area. Image courtesy of Lili Feng Image showing a "picture" of ...