[2016-03-08 13:00:00] Within the U.S. Department of Agriculture exists a division called Wildlife Services, which since 2000 has killed more than 2 million native mammals and 15 million native birds in an effort to protect the livestock industry. This hour, we’ll talk about human influence on the natural world with Christopher Ketcham, whose story on the topic, “The Rogue Agency” appears in the current issue of “Harper’s.”