1.) Host Peter Berle discusses the possible reauthorization of the Endangered Species Act. 2.) In the segment "Portrait of a Place", author/explorer Janet Jordan talks about Angel Falls in Venezuela. 3.) In the segment "Locking Horns", Jerry Taylor of the Kato Institute and Chris Flavin of the World Watch Institute argue over solar power as a viable future energy source. 4.) Thomas Lalley reports on an attempt to change the regulations of pesticides in food. 5.) In the segment "Earth Calendar" Berle talks with ecologist Whit Gibbons about the Scarlet King Snake and his attempts to tag and study them.