To better understand the circadian clock in modern-day cyanobacteria, a research team has studied ancient timekeeping systems. They examined the oscillation of the clock proteins KaiA, KaiB, and KaiC ...

If you are sneezing this spring, you are not alone. Every year, plants release billions of pollen grains into the air, specks ...

Science can help. Anywhere in the out of doors there is opportunity for real fun with science. In this issue, we describe ...

Palynologists who study tiny pollen fossils share 4 stories found in grains that fell hundreds to millions of years ago.

A new study suggests two fossil trackways found in Australia were made by an early amniote, a group that today includes ...

Fossilized tracks from an early reptile are now the oldest known reptilian tracks, meaning the tetrapod ancestor most likely ...

Hello again, dear readers, and welcome to a bonus letters column. This comes to you courtesy of the abundance of mail we have been receiving. We recently heard from a reader in Southern California who ...