We have given numerous talks  in English and Spanish in the US and Latin America about natural history subjects over the years.  We have added a number of our talks to this page in order to provide a source of information for cactus (and other nature-oriented) groups to use.  In the event that your group prefers a live presentation we may be available to do so.  Depending on the location we would only request that transportation and lodging expenses are covered.  We do not charge honoraria.

Feel free to contact us for more details.