Americans consistently say they care about science, climate, and the environment and increasingly want ways to translate that concern into meaningful action. Tipping Point brings together participants ...

The cost of reversing the effects of climate change -- restoring melted polar sea ice, for example -- quickly climbs nearly fourfold soon after a tipping point is crossed, according to new work. Much ...

Thanks to the dire condition of the Earth's coral reefs, the planet has now reached its first tipping point for human-caused climate change, according to a new report by scientists in Europe. The ...