These prolific fish are already widespread in stretches of the Illinois and Mississippi rivers, where they have severely overwhelmed native aquatic communities.
Beneath the ice crust of a frozen ocean, microscopic algae and bacteria thrive. As the Arctic becomes ice-free, they will play a new role in Earth's ecology.
These researchers say that the monitoring of repeated slow oscillations in ground swelling and collapse is vital to understanding whether an eruption is imminent.
Scientists discovered a new species of a peculiar cave-dwelling snail in one of the 20 deepest cave systems in the world, Lukina Jama–Trojama in Croatia.
Evidence of diverse life forms dating back nearly a hundred thousand years has been found in subglacial lake sediments by a group of British scientists.