Daily Roundup: April 27, 2011

Heavy Breathing: The American Lung Association ranked the American cities on air pollution; 8 of the worst 10 are in California. Santa Fe, New Mexico, is cleanest. Ecocentric (Time)

Cozy Corporations: BP says it'll be back in the Gulf to drill this year. Also, it's becoming clear that those who were supposed to regulate Japan's Fukushima Daiichi nuclear plant were purposely lax. Yahoo! Green and Greenwire

Break it Down: A new logo was introduced to mark products made of or packaged in biodegradable plastics. Greenspace (Los Angeles Times)

Disruptive Behavior: The southern U.S. states are being pummeled by unusually severe weather, including tornadoes. At least 11 are dead. Some wonder whether climate disruption is to blame. AP and The Fayetteville Observer

Happy Hoofers: Good news for Nepal's endangered rhinos: Their population has significantly grown over the past two years, thanks to protection efforts. ARKive

--Avital Binshtock