A 66 million-year-old mystery behind how our planet transformed from a tropical greenhouse to the ice-capped world of today ...

A pull in the right direction ...

Our planet has experienced dramatic climate shifts throughout its history, oscillating between freezing "icehouse" periods ...

Our planet is unique for its ability to sustain abundant life. From studies of the rock record, scientists believe life had already emerged on Earth at least 3.5 billion years ago and probably much ...

Shares of USA Rare Earth (NASDAQ: USAR) are up about 20%, or $3.88, with volume spiking to 14 million, as compared to its ...