The planet is grappling with a “new reality” as it reaches the first in a series of catastrophic and potentially irreversible climate tipping points: the widespread death of coral reefs, according to a landmark report produced by 160 scientists across the world. As humans burn fossil fuels and ratchet up temperatures, it’s already driving more severe heat waves, floods, droughts, and wildfires. But there are even bigger impacts on the horizon. Climate change may also be pushing Earth’s crucial systems — from the Amazon rainforest to polar ice sheets — so far out of balance they collapse, sending catastrophic ripples...