Zoologists of the University of Jena find out how sloths perfected energy saving.

JENA, Germany - Scientists in the eastern German city of Jena said Wednesday they have finally given up after three years of failed attempts to entice a sloth into budging as part of an experiment in animal movement.

By Julio Godoy/Tierramrica PARIS, Nov. 27, 2006 (IPS/GIN) -- A metal tower standing some 300 meters tall in Siberia, where temperatures can vary 80 degrees Celsius over the course of a year, may produce data that prove essential to understanding global climate change.

Carl Gegenbaur and Evolutionary Morphology. UWE HO[Beta]FELD, LENNART OLSSON AND OLAF BREIDBACH, EDS. Special Issue, Theory in Biosciences Vol. 122 (2-3), June, 2003, Urban & Fischer Biology is a fast-moving field that looks forward rather than around, and almost never backward.