Up Next
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.
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.

26:45
April 26, 2025 - PBS News Weekend full episode

57:46
April 25, 2025 - PBS News Hour full episode

57:46
April 24, 2025 - PBS News Hour full episode

57:46
April 23, 2025 - PBS News Hour full episode

56:44
April 22, 2025 - PBS News Hour full episode

56:44
April 21, 2025 - PBS News Hour full episode

26:45
April 5, 2025 - PBS News Weekend full episode

26:44
January 12, 2025 - PBS News Weekend full episode

26:45
January 11, 2025 - PBS News Weekend full episode

57:46
Israel's Prime Minister says the intense phase of the war in Gaza will end soon as Israel and the U.S. argue over weapons deliveries.

57:46
After Claudia Sheinbaum becomes the first woman to win Mexico's presidential election, a look at what that means for U.S. relations.

26:44
"PBS NewsHour" asks NATO’s Secretary General if the delayed U.S. aid to Ukraine is too late to make a difference.