Impacts Something is killing gray whales. Is it a sign of oceans in peril? A leviathan die-off has alarmed legions of whale watchers and perplexed scientists up and down the western coast of North America for the past 2½ years.
Politics www.scientificamerican.com Arctic exploitation may harm animals large and small As the region warms, ignorance about creatures ranging from plankton to whales leaves them vulnerable to human activities.
Newsletter Belugas’ downward spiral The Arctic mammals are losing ground. This warming world is beating them down.
