Who rescued who? This popular animal-shelter bumper sticker captures an enduring emotional truth: With their love and companionship, animals of all species save our lives every day. But sometimes, to our utter amazement and everlasting gratitude, animals
Today, an ancient world is vanishing right before our eyes: the age of giant animals. Over 40,000 years ago, the earth was ruled by megafauna: mammoths and mastodons, saber-toothed tigers and giant sloths. Of course, those creatures no longer exist, due t
