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 ...

In the early 1900s, the center of Cairo was the cultural heart of the city, with an opera house, gardens and elegant hotels ...

The shift from ancient to modern metropolises often leaves historians and curious minds asking: which are the oldest civilizations in the world?

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