Tracking all of the latest NHL trades, including the Pittsburgh Penguins acquiring Matt Dumba and the Toronto Maple Leafs moving out Ryan Reaves.

Rubble ridges, which have been built parallel to the shore, help retain some sand without fully stopping the natural flow in the lake.

As the weight of melting ice is lifted off volcanos, eruptions will become more common and more violent, according to a new study of volcanos in Chile’s Patagonia region, reports the Smithsonian ...