Flickering glacial climate may have shaped early human evolution

PHYSorg
Feb 19, 2026, 2:00 pm62 ptsTrending
Researchers have identified a "tipping point" about 2.7 million years ago when global climate conditions switched from being relatively warm and stable to cold and chaotic, as continental ice sheets expanded in the Northern Hemisphere. Following this transition, Earth's climate began swinging back and forth…

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