The outbreak occurred much earlier than the Middle Ages and had an unexpectedly high mortality rate.

Is the cat dead or alive? Either way, the cat is certainly weird, as a new study demonstrates.

The bias certainly appears to exist, but scientists still have no idea why it exists.

The Hubble tension—a disagreement over the universe's expansion rate—has led to fears of a cosmology crisis, but is it actually that serious?

The clock of physicists' wildest dreams may finally help advance science.