Despite recent defeats, activists are optimistic that courts will provide relief from climate change.

Leading scientists and conservationists are proposing that up to 50 percent of the earth's land and oceans be protected in the coming decades. While some view the goal as unrealistic, proponents say it is essential for preserving the natural systems on which life itself depends.

A new record set so soon after the previous record of 17.5C in March 2015 is a sign warming in Antarctica is happening much faster than global average.

The latest climate models have unexpectedly started to predict nightmarish warming scenarios. Now, scientists are scrambling to understand why, and if they can be trusted.

The simulators used to forecast warming have suddenly started giving us less time.

Monarch butterflies from across the western U.S. migrate to California for the winter. A new count shows a species in continued decline.

The symbolic timepiece ticks to 100 seconds from midnight amid climate and nuclear concerns.

Unsustainable use of resources is wrecking the planet but recycling is falling, report finds.

Greta Thunberg took the stage at the 2020 World Economic Forum in Davos on Tuesday to admonish world leaders for doing very little to reduce carbon emissions despite evidence of a looming climate catastrophe.