Jerry Monkman / Nature Conservancy employees cutting back Japanese knotweed (Fallopia japonica) in an invasive species eradication effort on the TNC's Silverweed Seep preserve in Plainfield, New Hampshire, USA.

Bernard Castelein / Removal of water hyacinth by forest department employees, Keoladeo Ghana NP, Bharatpur, Rajasthan, India. This invasive aquatic plant chokes up the water ways if not managed.

Karl Ammann / Bushmeat price list displayed by trader, South East Cameroon, West Africa. Logging company employees are common clients for traders and unless timber companies provide subsidized domestic alternatives...