Watch: Bill Nye on why you should care about climate change.

In the new video above, Bill Nye the Science Guy explains why climate change is much more than a buzzword. “It’s a real and serious issue,” he says.

In fact, the world’s leaders are debating what to do about it this week in Paris. It’s true Earth’s climate has changed through time naturally due to slight changes in the planet’s orbit, Nye notes, “but climate change as we know it today is characterized by an abrupt increase in the Earth’s temperature.”

That’s 1.2 to 1.4 degrees Fahrenheit warmer over the past century. Ten of the last 13 years were the warmest on record (including this year, according to a recent report). And 97 percent of climate scientists think

DON'T MISS THE REST OF THIS STORY!
Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.

Create your free account to continue reading

No credit card required. Unlimited access to free content.
Or get a Premium Subscription to access the best of Nat Geo - just $19
SUBSCRIBE

Read This Next

'World’s worst shipwreck' was bloodier than we thought
World’s first ultrasounds of wild manta rays reveal a troubling truth
Titanic was found during secret Cold War Navy mission

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet