5 agosto 2014
Geologists are explore the hidden world beneath our feet. Examining the effects of human drilling shows how humans have left their mark on Earth both above the surface and deep below in the subterranean network of human-made tunnels in ways that will have a long-standing impact in the future.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/lyH9I5CIqhA/140805090949.htm
