Descriptions from the website:
This problem space provides a collection of resources for going beyond the discussions of whale evolution presented in biology textbooks to look at how different types of data can be used to resolve this set of phylogenetic puzzles and to explore other related questions.
In addition to providing some background on this topic the problem space has:
Great Danes stretch more than a meter from paw to shoulder and can easily weigh more than 90 kilograms. A Chihuahua fits snugly inside a purse. Domestic dog breeds are more varied in body size and shape -- not to mention coat color and fur length -- than any other land-based mammal. Yet, according to a new study, a mere two to six regions in doggy DNA account for most of this diversity.
September 23, 2010 -- The BP spill in the Gulf of Mexico sent oil into wetlands frequented by migrating birds. In response, U.S. farmers are flooding fields as far north as Missouri to create alternative, untainted stopovers for birds heading south for the winter.
June 2, 2010 -- In behavior never before recorded by scientists, male red-eyed tree frogs are shown shaking their rumps and entire bodies to show dominance. The shaking often precedes wrestling between the two males.