Science Jan 22 Earth’s ozone layer continues to recover, scientists report By William Brangham, Andrew Corkery, Solveig Rennan, Azhar Merchant
Nation Nov 26 U.S. proposes stricter smog limits to protect health WASHINGTON — In a fresh confrontation with Republicans, the Obama administration on Wednesday proposed stricter emissions limits on smog-forming pollution linked to asthma and respiratory illness. The move fulfilled a long-delayed campaign promise by President Barack Obama but left environmental… By Josh Lederman, Dina Cappiello, Associated Press