paleoclimate
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The Day After Tomorrow Happened 30,000 Years Ago
Toward the end of the last ice age, Earth’s climate was a turbulent beast, warming up and chilling out again every 1500 years. Research published today in Science links these abrupt temperature swings to changes in ocean circulation, filling an important gap in our understanding of past climate change.
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A Vast River Network Once Crisscrossed The Sahara
The Sahara is about the worst place on Earth to find water today, but that wasn’t always the case. Thousands of years ago, its sandy dune fields were lush and verdant. A new scientific paper helps explain why: the Western Sahara used to be irrigated by a vast river network.