Up Next
Back to Show
PBS News Hour
Why we’re ‘perilously close’ to a global warming threshold
This past week, the EPA said it is reconsidering the scientific finding that greenhouse gases are a danger to public health. This comes as research shows average global temperatures in 2024 likely rose above a 1.5 degree Celsius threshold that for years has been a red line for climate change. Ali Rogin speaks with Michael Mann at the University of Pennsylvania to learn more.
Support Provided By

26:44
October 19, 2025 - PBS News Weekend full episode

26:44
October 18, 2025 - PBS News Weekend full episode

57:46
October 17, 2025 - PBS News Hour full episode

57:46
October 16, 2025 - PBS News Hour full episode

57:46
October 15, 2025 - PBS News Hour full episode

57:46
October 14, 2025 - PBS News Hour full episode

57:46
October 13, 2025 - PBS News Hour full episode

26:45
October 12, 2025 - PBS News Weekend full episode

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

57:46
October 10, 2025 - PBS News Hour full episode

57:46
October 9, 2025 - PBS News Hour full episode

57:46
October 8, 2025 - PBS News Hour full episode