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Why Earth's melting glaciers matter more than we think - PBS NewsHour
Ice in the Arctic and Antarctica plays a critical role in maintaining life on Earth, and it is melting faster than previously thought. This is threatening our planet with potentially massive sea-level rise, weather disruptions and further global warming.
Horizons moderator William Brangham explores the fate of ice on Earth with science correspondent Miles O’Brien and glaciologist Erin Pettit. - Aired on 01/23/2026.