According to a new study from an international team led by researchers, the oxygen-deficient zones that occur in the open ocean shrank in long warm periods of the past. When oxygen becomes scarce, ...

All the Latest Game Footage and Images from The Cenozoic Era The Cenozoic Era is a realistic animal survival game taking place during the rise of mammals, take control of a variety of animals and ...

When oxygen becomes scarce, life has a hard time. This is just as true for mountain regions above 7000 meters but also for bodies of water. For example, in tropical ocean regions off of West America ...