signifies a global rise in atmospheric oxygen level. This is because the protein molecule of multicellular organisms requires oxygen for its synthesis. Atmospheric oxygen levels rose significantly ...

Scientists have found that increasing oxygen levels are linked to the rise of North American dinosaurs around 215 M years ago. A new technique for measuring oxygen levels in ancient rocks shows ...

Before it, there was practically no oxygen in the atmosphere; after, there was. Conventionally, the rise of oxygen is seen as life triumphantly terraforming a passive planet. But we’re learning ...

A sharp increase in the Earth’s atmospheric oxygen levels about 50 million years ago was responsible for the rise of the large mammals, a new study claims. “We argue that the rise in oxygen ...

Earth's earliest ice ages may have been due to the rise of oxygen in Earth's atmosphere, which consumed atmospheric greenhouse gases and chilled the earth. A team of scientists from Germany ...

Scientists have long thought that there was a direct connection between the rise in atmospheric oxygen, which started with the Great Oxygenation Event 2.5 billion years ago, and the rise of large ...

The first, high resolution continuous record of oxygen concentration in the earth’s atmosphere shows that a sharp rise in oxygen about 50 million years ago gave mammals the evolutionary boost ...

Future work on the evolution of atmospheric oxygen will focus on these intriguing aspects of the time before its ultimate rise at 2.45 billion years ago. It will seek to explain why the increase ...

Earth’s days were once only 18 hours long about 1.4 billion years ago.Since then, they have lengthened, with the current rate of change being approximately 1.8 milliseconds per century. This ...

A burning question for those studying the early Earth is whether oxygen production started in the ocean before it first began to accumulate in the atmosphere. A growing body of work convincingly ...