The moon will pass directly in front of the sun on Feb. 17, setting the stage for a dramatic annular solar eclipse.

After years of work building an exquisitely sensitive instrument, University of Chicago scientists stood and watched as it flew up and out of sight into the fiercely blue Antarctic sky. Launched on ...

Scientists warn that growing rifts in Antarctica’s Thwaites Glacier could speed up global sea level rise, heightening climate risks worldwide.

On Friday, the Trump administration rolled back protections for a marine national monument off the coast of Cape Cod.

In the gaps between the visible ice, humpbacks blow out steam in spouts of warm whale air. Then a transient type A orca more than six metres long swims right across our bow. The passengers – mostly ...