Honduran indigenous environmental activist Berta Cáceres was shot to death in her home, last week. Her murder came less than a week after her life was threatened for her opposition to a hydroelectric dam project. We’ll talk with Matt Ginsberg-Jaeckle, who worked with Cáceres on human rights and environmental issues for nearly two decades, about her impact in Honduras. A new study finds that climate change could eventually kill as many as a half-million people as a result of food shortages and reduced agricultural productivity. We talk with Dr. Marco Springmann, a fellow of the Oxford Martin Programme on the Future of Food at the University of Oxford, about his latest report. Plus, in Australia Chlamydia is running rampant among the Koala population. Some experts say the best way to save them is to cull their numbers. We speak with David Wilson, head of infectious diseases at the Burnet Institute in Melbourne, Australia, about the fight to save Koalas.