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Last month, the first comprehensive study on global bush meat consumption found that 113 species in Southeast Asia have dwindled to precarious numbers, primarily due to bush meat hunting and trapping. But while this region may be one of the worst affected, the study, published in Royal Society Open Science, reports that bush meat hunting is driving many of the world's mammals to the brink of extinction. "The large mammals are much more threatened than the small ones," says William Ripple, a professor of ecology at Oregon State University and lead author of the study. "This is likely because there is more meat on large mammals."

Look for Portland State University students climbing on the Walmart roof, the green roof, that is. Under a two-year research partnership between the Oregon school and the retail giant, PSU is building a green roof research site on Walmart's new North Portland store.