monarch butterflies

While a single animal may not catch the eye, when thousands or millions of them come together, it is an awe-inspiring—and sometimes fear-inspiring—sight to see.  Swarms of Asian giant hornets have been in the news recently, after killing more than 40 people in northwestern China. (Read “Swarm Theory” in National Geographic magazine.) But not all...

While a single animal may not catch the eye, when thousands or millions of them come together, it is an awe-inspiring—and sometimes fear-inspiring—sight to see.  Swarms of Asian giant hornets have been in the news recently, after killing more than 40 people in northwestern China. (Read “Swarm Theory” in National Geographic magazine.) But not all...

Birds do it. Bees do it. Butterflies and chimpanzees do it.  These animals and many others self-medicate, using plants and other surprising materials to improve not only their own health but also the health of their offspring. A video of capuchin monkeys at the Edinburgh Zoo shows them rubbing onions and limes on their skin and into...