Daily Roundup: February 25, 2011

Great Green Wall: A living green wall spanning nearly 5,000 miles is slated to be built across Africa to prevent the encroaching desertification of the Sahel Desert. Guardian

Soundness of Science: Results of a formal inquiry into 2009's "climate-gate" scandal exonerated NOAA scientists, stating they did not alter data to support evidence of global warming. New York Times

Health Matters: In response to hundreds of lawsuits and allegations of poisoning, coal company Massey Energy agreed to set up a medical monitoring program to screen the health of West Virginia residents. AP

Other Fish in the Sea: After a similar announcement by Trader Joe's, Costco agreed to adhere to Greenpeace's seafood guidelines and removed 12 red-listed species from shelves. Grist

Not So Fast: Thai customs officials thwarted an attempt to smuggle vast amounts of African ivory into Bangkok, crediting the victory to increased intelligence-sharing among wildlife officials. Huffington Post

--Rosie Spinks