"Past climates with surface and shallow-subsurface liquid water are recorded by Mars's sedimentary rocks, including strata in the approximately 4-kilometer-thick [circa 2.5 miles thick] record at Gale ...

Lake Nyos in Cameroon released a massive cloud of carbon dioxide that suffocated over 1,700 people instantly. This video ...

As climate change threatens tropical forests, a new study shows how the loss of those forests can be devastating to life on ...