From melting ice sheets to collapsing ocean currents, these sudden, irreversible changes could reshape the planet in ways we can’t undo. But what does it really mean to cross a tipping point? How do ...

Earth’s climate is no longer edging toward danger in the abstract. Scientists now say at least one major part of the system has already tipped into a new state, with others close behind. The question ...

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 ...

A "tipping point" is a critical moment when an idea, behavior or trend crosses a threshold and gains unstoppable momentum. The term entered our leadership lexicon when Malcolm Gladwell's bestselling ...

Scientists are increasingly blunt about what lies ahead: the climate is edging toward thresholds that, once crossed, will lock in damage for generations and accelerate the very warming that caused the ...

The Amazon’s “tipping point” refers to the transition of the rainforest into a drier, savanna ecosystem. The rainforest’s ecological balance depends on the transport and recycling of moisture, but ...

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 ...

Walter interviews Malcolm Gladwell about his latest book, "Revenge of the Tipping Point." Some 25 years after the publication of Gladwell's groundbreaking first book, "The Tipping Point," the author ...