Eighteen U.S. colleges and universities have offset 100 percent of their greenhouse-gas emissions from electricity through renewable energy certificates.

Western Washington University, the University of Central Oklahoma, Evergreen State College, Concordia University Texas, and Unity College use 100 percent renewable energy to power their operations.

High school students and young adults have persuaded 200 U.S. colleges and universities to commit to paperless admissions processes by signing the online Students Plant the Seed petition.

New York University buys more green power than any other school in the country.

Thanks to a coalition of students, all 15 institutions in the University System of Maryland are conducting greenhouse-gas inventories. Some are converting buses to biodiesel and starting green building projects, with the goal of eliminating carbon emissions.

Climate change stresses agricultural systems, which could result in price spikes for crops such as hops and barley, the basics of a beverage close to many students' hearts. Cincinnati State Technical and Community College students connect those dots at the annual Save the Ales bash.

Indiana University dorm residents compete to conserve water and electricity in the monthlong Energy Challenge. This year students saved nearly 614,000 gallons of water and more than 400,000 kilowatt-hours of electricity.

After the student government refused to include a sustainability fee on the school ballot, the Student Environmental Center at Southern Illinois University gathered 2,500 signatures to put the fee up for a vote, and it passed overwhelmingly.