The Water Bowl: Killer Whales ‘Sue’ SeaWorld

Jan Kopec/Getty

updated 02/07/2012 AT 10:00 AM ET

originally published 02/07/2012 AT 11:30 AM ET

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Can animals be enslaved? That is the question at the center of a lawsuit filed by PETA against SeaWorld, and which has named five killer whales as plaintiffs. It is the first time in U.S. history that a federal judge has heard arguments in such a case. –AP

There are more iguanas (4 million) than humans (3.9 million) on Puerto Rico, and the government has decided to aggressively target the reptile population, which has impacted infrastructure and the ecosystem. The new plan looks to export iguana meat – would you eat iguana? –AP

They may be popular, but these breeds have never won Best in Show at Westminster: Labrador retriever, golden retriever, Chihuahua, and dachshund, among others. –Mother Nature Network

A popular herbicide called atrazine is permissible in drinking water at 2.5 parts per billion, but less than that is all it takes for a male frog to develop female sex organs and give birth. The scientist who discovered this has found himself in a feud with atrazine’s manufacturer. –Mother Jones

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