Why experts think climate change will cause more frequent and extreme weather events

NEW YORK (AP) — In the opening scene of American writer Kim Stanley Robinson's "The Ministry for the Future," a heat wave combined with a breakdown of the electrical grid in India kills 20 million people.

The devastation causes the world's nations to unite to combat climate change.

Scientists have long warned that the world will experience more intense extreme weather events like heat waves, storms, floods and droughts.

But what once seemed like the...