Why is Boston bombing suspect Tamerlan Tsarnaev being buried in Virginia?

Authorities had a hard time finding a cemetery that would accept the remains of Tsarnaev, who was killed in a shooting with police days after he helped plant the bombs that killed three people and injured countless others near the finishline of the Boston Marathon last month. Responding to a police request for help finding a burial site, a woman from Virginia worked with the Islamic Funeral Services of Virginia to arrange for Tsarnaev to be placed at Al-Barzakh cemetery in rural Caroline County, Va., about 30 miles north of Richmond. Tsarnaev was quietly buried there Thursday. His younger brother and alleged accomplice, Dzhokhar Tsarnaev, remains in custody.

How many of the U.S.'s 3,500 colleges are actually worth attending?

One hundred and fifty, according to Former Secretary of Education William Bennett. The author of "Is College Worth It" evaluated the return on investment for all of the nation's colleges and came to the conclusion that only 4 percent had a return that made them a good investment for students. And what school came out as the best bang for the buck on Bennett's list? Harvey Mudd College, a private liberal arts college in Claremont, Calif.

Are cities meeting their goals to reduce carbon emissions?

It's hard to tell, but some scientists are trying to find out after carbon dioxide reached 400 parts per million in Hawaii -- a threshold that hasn't been touched in millions of years. Scientists are putting censors atop the mountains near Los Angeles and the iconic Eiffle Tower in Paris to monitor the invisible gas along various points throughout the cities. It could eventually help city leaders figure out if their lofty benchmarks to lower their carbon footprints are actually being met.