Every night, as darkness envelops us, one quiet presence of the moon watches over us. It’s not just a natural satellite or a ...

The Earth was going faster than usual, and there are two more days coming up this summer, so, if you missed it, you'll have a second and third chance to see if you can feel the shift.

Kurtz’s Mill Covered Bridge gleams white against the blue Pennsylvania sky like a cloud come to earth. Inside, wooden beams create a tunnel effect that frames the view beyond in a perfect rectangle.

The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond ...