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.

Why we’re ‘perilously close’ to a global warming threshold

5m 57s

  • March 17, 2025 - PBS News Hour full episode: asset-mezzanine-16x9

    March 17, 2025 - PBS News Hour full episode

    S2025 E76 - 57m 46s

    Monday on the News Hour, the Trump administration invokes wartime powers to deport hundreds of alleged members of a Venezuelan gang. The President dismantles Voice of America and the news and information it provided to people in autocratic countries. Plus, despite an increase in autism diagnoses, law enforcement often lacks training to respond effectively to people with developmental disabilities.

WETA Passport

Stream tens of thousands of hours of your PBS and local favorites with WETA Passport whenever and wherever you want. Catch up on a single episode or binge-watch full seasons before they air on TV.