North and South Korea exchanged fire after North Korea’s shells landed in South Korean waters during a military drill.
National Geographic’s Dan Vergano details the volcanic “ring of fire” that poses the threat of a much larger earthquake.
Jason Carroll reports on a magnitude-5.1 quake that hit Los Angeles, California.
iReporter Jim Denny shot this video of the Perseid meteor shower over Kekaha, Hawaii, on August 10, 2013.
U.S. officials say a Russian fighter jet made a dozen low-altitude passes on the USS Donald Cook in the Black Sea.
CNN’s Jake Tapper talks with James Balog, a photographer who has captured evidence of what he says is global warming.
Holly Firfer takes us to the National Cherry Blossom Festival in Washington.
iReporter Jesper Gronne films time-lapse video of the Aurora Borealis in the skies over Silkeborg, Denmark.
Time-lapse video shows a unique view of the Aurora Borealis near St. Cloud, Minnesota.