Tale of two climate crises gives clues to the present

Figuring out what lies ahead for our species and our planet is one of the most pressing and challenging tasks for climate scientists. While models are very useful, there is nothing quite like Earth's history to reveal details ...

Landmarks to go dark for extinction awareness

Global landmarks from the Sydney Opera House to Dubai's Burj Khalifa are set to dim their lights on Saturday to raise awareness about energy use and our planet's vanishing biodiversity.

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