This learning module examines conflicting demands for fresh water around the world. It looks at the water resources that are available, water scarcity, and local and international conflicts over water. Specific cases are explored,...

This teacher resource fosters learning about the inner workings of the President's Cabinet. Find out how each agency or department must compete for money and support. As the agency chief, you must prepare a presentation for the president...

As is often the case in species where males compete to mate with as many females as possible, northern elephant seal males are much larger than females (1,800 kg versus 650 kg on average). Competitions can be battles, but more often...