Tipping Point: Best Ever Finals is a half hour spin-off that is shown at times when the Regular or Lucky Stars episodes are neither first broadcast nor repeated (e.g. during ITV Horse Racing coverage) ...

Meltwater runs across the Greenland ice sheet in rivers. The ice sheet is already losing mass and could soon reach a tipping point. Maria-José Viñas/NASA As the planet warms, it risks crossing ...

RICHLAND, Wash. —Tip the first tile in a line of dominoes and you’ll set off a chain reaction, one tile falling after another. Cross a tipping point in the climate system and, similarly, you might ...

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 ...