A new report says the killings of environmental activists defending land rights has surged over the past decade. The group Global Witness says 147 activists were killed in 2012, compared to 51 in 2002. The death rate is now an average of two per week. Brazil was the world’s deadliest country for environmental defenders, with 448 deaths between 2002 and 2013. Honduras was second with 109 deaths over the same period.