Daily Roundup: February 23, 2011

Shook Foundations: A magnitude 6.3 earthquake in Christchurch, New Zealand, killed at least 65 people and caused a huge but weak glacier to collapse. Prime minister John Key said it "may be New Zealand's darkest day." National Geographic

Loosened Leash: The EPA revised rules about commercial boilers so that corporations aren't as financially affected by the enforcement of those rules. Greenwire

Something in the Air: Air pollution reduces children's lung function, according to a new long-term study. A separate new study concludes that air pollution is likelier to trigger a heart attack than physical exertion, alcohol, or cocaine are. Reuters and Guardian

Numbing the Earth: Cocaine shouldn't be let off the hook, though: New research shows that farming the drug is the cause of increasing deforestation in South America. National Geographic

Cetacean Victims: An unusually high number of baby dolphins (at least 20 so far) are washing up dead on Gulf of Mexico shores. Experts think it has something to do with last year's oil spill. Scientific American

--Avital Binshtock