People can get close to gorillas in Kahuzi-Biega National Park in the Democratic Republic of Congo because the animals are habituated to humans. That could make them vulnerable to poachers. Ecotourism could bring such dangers to other creatures, a new study warns.
GREAT JUMPING GASTROPODS Small conchs that jump away from danger oxygenate their athletics surprisingly well under stressful conditions.
BEFORE AND AFTER Healthy coral are full of color, like the fire coral seen on the left. But stressors, including overly warm ocean water, cause symbiotic algae to abandon coral tissues, bleaching them (right).