"Green roofs are increasing in popularity across the US, especially in cities, where there's not a lot of space for gardens. In Washington, DC, the city government is promoting the practice for its environmental benefits."

"HOUMA, La. -- As thousands attended Grand Isle's biggest tourist event this weekend most of its beaches -- and others close by -- were under advisories for high levels of bacteria in the water. State environmental officials say they don't know the cause because there are too many potential contamination sources."

"The great outdoors is a dangerous place for animals, who often die from hunger, predator attacks, or infections. But cancer can also be a culprit, and human pollution may be making it worse."