There have been several mass extinction events during the planet's history, including the Cretaceous–Paleogene extinction event, arguably the best known because of the death of the dinosaurs. Now, ...
New research finds that the fertility rate needed to sustain a population is much higher than once thought, especially when sex ratios or mortality rates shift. This raises important questions for ...
A mass extinction event 2 billion years ago could have been bigger than the event that wiped out the dinosaurs 65 million years ago. A mass extinction occurred around 2 billion years ago, wiping out ...
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