John G. Geer
In Defense of Negativity
Attack Ads in Presidential Campaigns
Carlos A. Lasso is the coordinator of biological conservation and use of biodiversity at the Alexander von Humbolt Institute in Colombia. Josefa C. Señaris is director of the Museo de Historia Natural La Salle in Caracas, Venezuela. Anabel Rial is the former science coordinator for Conservation International Venezuela and is a botanical and conservation consultant. Ana Liz Flores is the former director of Conservation International Venezuela and is a natural resource management consultant.