Stores are using portable phones' WiFi devices to track people in the store>.

Egypt's military government is launching the repression in advance as the anniversary of the freedom movement approaches.

Although the rate of killing rhinos in South Africa has stopped increasing, it is already high enough to wipe them out.

2015 was 1.6F hotter than any year in the 20th century.

The last time Earth was this hot was 130,000 years ago, and sea level was 6 meters higher (20 feet).

California has joined New York in investigating Exxon's climate lies.