Charles Darwin worried that the fossil record looked strangely abrupt, with complex animals appearing in a geological instant ...

During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...

The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

As clean energy prices fall, a fast transition to renewable energy is the cheapest option on the table. Experts say it could ...