Heat Wave

A new study shows that marine heat waves have become more frequent and more severe as ocean temperatures have climbed.

Meanwhile, several blazes in Northern California have yet to be contained.

A man and a boy wash and cool off their dog with the water of an opened fire hydrant.

In 2015, every state in the country was warmer than the 20th-century average.

As hotter summers become more deadly, warmer winters won't bring respite, according to new research.