Bob Grant

Airbursts from space may be more common than we thought

The Dalai Lama, the Eastern Orthodox Church, and the Vatican weigh in

Plastic pollution is costing the world $1.5 trillion a year in health-related losses

Dinosaur teeth are unique windows into Earth’s ancient air

Researchers may have elucidated the long-mysterious chain of events that gives us bolts from the heavens

A phenomenon that captured the imaginations of generations of bathers may be key to understanding planetary formation

These additions to the tree of life look positively scrumptious

Up to 100 tiny orphan galaxies may lurk in the shadows of our own Milky Way

The colossal structures, built by hunter-gatherers, are way older than archaeologists had thought possible

100 million years ago, the charismatic cephalopods ruled Earth’s oceans

But why?

Just take a look at these smoke rings