Skip to main content
Donate

Up Next

Police still searching for motive in San Bernardino case

Police still searching for motive in San Bernardino case

Video
4:07
Ash Carter on a military turning point for women in combat

Ash Carter on a military turning point for women in combat

Video
9:58
How the benefits of climate action may outweigh the costs

How the benefits of climate action may outweigh the costs

Video
5:26
The terrorism question looming over San Bernardino

The terrorism question looming over San Bernardino

Video
8:10
Ambassador Power on uniting anti-ISIS coalition

Ambassador Power on uniting anti-ISIS coalition

Video
9:20
News Wrap: U.S. economy turns in solid November jobs numbers

News Wrap: U.S. economy turns in solid November jobs numbers

Video
3:17
Nigeria, a country of pain, promise and complexity

Nigeria, a country of pain, promise and complexity

Video
7:41
Shields and Brooks on the San Bernardino shooting

Shields and Brooks on the San Bernardino shooting

Video
12:28
How to solve Puerto Rico's food crisis? Eat local.

How to solve Puerto Rico's food crisis? Eat local.

Video
4:23
Women take a stand against violence in Spike Lee’s ‘Chi-Raq’

Women take a stand against violence in Spike Lee’s ‘Chi-Raq’

Video
6:53
How can law enforcement prevent self-radicalization?

How can law enforcement prevent self-radicalization?

Video
3:22
Climate talks move forward, but political roadblocks remain

Climate talks move forward, but political roadblocks remain

Video
3:42
Back to Show
PBS News Hour

Why 2 degrees Celsius is climate change’s magic number

We hear all the time that we need to stop the planet from warming an additional two degrees Celsius above pre-industrial levels. Why is that specific number so important though? And what happens if we exceed that limit? William Brangham offers some background on that climate science target.
Support Provided By
September 5, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 248
September 5, 2025 - PBS News Hour full episode
September 5, 2025 - PBS News Hour full episode
September 4, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 247
September 4, 2025 - PBS News Hour full episode
September 4, 2025 - PBS News Hour full episode
September 3, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 246
September 3, 2025 - PBS News Hour full episode
September 3, 2025 - PBS News Hour full episode
September 2, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 245
September 2, 2025 - PBS News Hour full episode
September 2, 2025 - PBS News Hour full episode
September 1, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 244
September 1, 2025 - PBS News Hour full episode
September 1, 2025 - PBS News Hour full episode
August 31, 2025 - PBS News Weekend full episode
26:45
Season 2025 Episode 243
August 31, 2025 - PBS News Weekend full episode
August 31, 2025 - PBS News Weekend full episode
August 30, 2025 - PBS News Weekend full episode
26:45
Season 2025 Episode 242
August 30, 2025 - PBS News Weekend full episode
August 30, 2025 - PBS News Weekend full episode
August 29, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 241
August 29, 2025 - PBS News Hour full episode
August 29, 2025 - PBS News Hour full episode
August 28, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 240
August 28, 2025 - PBS News Hour full episode
August 28, 2025 - PBS News Hour full episode
August 27, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 239
August 27, 2025 - PBS News Hour full episode
August 27, 2025 - PBS News Hour full episode
August 26, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 238
August 26, 2025 - PBS News Hour full episode
August 26, 2025 - PBS News Hour full episode
August 25, 2025 - PBS News Hour full episode
57:46
Season 2025 Episode 237
August 25, 2025 - PBS News Hour full episode
August 25, 2025 - PBS News Hour full episode
Show more
Active loading indicator