A new study suggests Antarctica’s ice sheet hit a climate tipping point about one million years ago, making it far more reactive to temperature and CO2 changes. Researchers warn this surprising sensitivity could offer clues about how the continent may respond to today’s warming world.

The research, led by scientists at […] Pusan National University in South Korea, offers fresh insight into how massive ice sheets react to long term climate changes and what that could mean for future sea level rise.

The study highlights that ice sheets may not always respond to climate change in a slow, predictable way. Instead, they can suddenly shift into a much more sensitive state after crossing critical climate thresholds.