Most of us agree that dogs are our best friends, but scientists don't agree on when that bond was forged. New genetic research is helping pinpoint the roots of canine domestication. Did you know that nothing really matters — at least when it comes to studying space? The barren voids out there are more important than you'd think. And, speaking of space, USSR cosmonaut Sergei Krikalev was stranded aboard the Mir space station while his country unraveled and modern Russia was born. This is his story.
Fun facts about frogs, get to know your ancestral cousins and so much more in the December issue of Discover!