Billions of viruses are raining down on you from the upper atmosphere every day

The next time you go outside and take a deep breath of fresh air, think about this: as you stare up into the sky, billions of tiny invisible viruses are raining down on you.

Dec. 29, 2018 — Water on Mars, lab-grown lungs and more: The biggest science stories of 2018

TESS, the planet hunting space telescope, is on track to discover a sky full of exoplanets

Dec. 29, 2018 — Water on Mars, lab-grown lungs and more: The biggest science stories of 2018

The year in climate change: Fires and heat-waves show things are heating up

The year in climate change: Fires and heat-waves show things are heating up

Billions of viruses are raining down on you from the upper atmosphere every day

We've been cloud seeding for decades, but now we finally know it works

Dec. 29, 2018 — Water on Mars, lab-grown lungs and more: The biggest science stories of 2018

TESS, the planet hunting space telescope, is on track to discover a sky full of exoplanets

A lake of water was found on Mars — and may be the first of many

Billions of viruses are raining down on you from the upper atmosphere every day