Daily Roundup: June 15, 2009

Exxpensive: Exxon was ordered today to pay about $500 million in interest on punitive damages for the 1989 Exxon Valdez oil spill. AP

Not So Silky: China’s Silk Road is being flooded by melting glaciers. NewScientist

Lively Trade: Colombia, one of the world's most biologically diverse nations, has started to sell rare animal species to other countries. AFP

Green Leaders: Scientific American has named its 25 best renewable-energy pioneer organizations. Topping the list are Intel, PepsiCo, Kohl’s, and Dell. Scientific American

Tweeet: Greenie Al Gore and self-proclaimed “queen of all media” Perez Hilton are neck-and-neck in their race to 1 million Twitter followers. Ecorazzi

--Avital Binshtock