Tethys went down with a chunk of Earth's crust 180 million years ago. When Gondwana broke apart, the crust slipped beneath the Eurasian plate. When this happened, shattered fragments of the crust ...

Interactions between Earth and the solar system have profoundly shaped the planet’s history, influencing evolution and climate. One striking example is the asteroid impact 66 million years ago ...

About 800 million years ago, oxygen levels reached about 21 percent and began to breathe life into more complex organisms. The oxygen-rich ozone layer was also established, shielding the Earth's ...

During this period, Earth's climate changed from hot and ... This was the Jurassic, which took place 199 to 145 million years ago. At the start of the period, the breakup of the supercontinent ...