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

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

As anticipation builds for the longer days that follow this weekend’s switch to daylight savings time, the moment seemed ideal to turn to one of the nation’s leading circadian-rhythms researchers, UC ...

The researchers use the analogy of a clock. Think of a normal clock with two hands: the hour hand and the minute hand. Now imagine the clock only has one hand. If it’s the hour hand, you can tell what ...