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).
XL Catlin Seaview Survey
In the aftermath of a hurricane, some animals will find new opportunities.
LAVA LAYERS Floods of lava formed the layers of rock in India’s Deccan Traps. Scientists sampled these layers (from location marked with a box on the map) and found that an increase in Deccan volcanism occurred within 50,000 years of the Chicxulub asteroid impact and the extinction of the dinosaurs.
Mark Richards/UC Berkeley (photo); Paul Renne/Berkeley Geochronology Center (map)