Why killer viruses are on the rise

Opening Pandora's box: Once pristine rain forest in Borneo, the land on the left has been clear-cut for a palm oil plantation. Everytime people cut into forests, they create "edges," where people come into contact with animals — and their viruses.
Opening Pandora's box: Once pristine rain forest in Borneo, the land on the left has been clear-cut for a palm oil plantation. Everytime people cut into forests, they create "edges," where people come into contact with animals — and their viruses.