An asteroid may have switched on Mars' magnetic field, and then ended it by crashing.

Beluga whales are a "bellwether species" for Russia's melting Arctic.

Converting methane waste into energy is becoming an increasingly feasible proposition.

A calcite crystal cave is several thousand feet longer than previous records showed.

A lunar navigation system is in the works to help future explorers keep their bearings.

Looking for life in the universe? Here's one place you can skip.

Edna sits on an examining table ready and alert -- she wants answers about the lump in her breast.

Prospective and current graduate business students who used a Web site to cheat on entrance examinations over the past five years could have their scores thrown out.

Jen Wang of Short Hills, New Jersey, took her first SAT when she was in sixth grade, long before she would start filling out college applications.

Where do MBA students most want to work when they get out of school? Investment banks and consulting firms are still popular choices, but for the second straight year, the most coveted employer is Google, a recent survey found.

Dan Berger, a 26-year-old aide to New York Congressman Charles Rangel, knew he wanted to get an MBA but, he says now, he was overwhelmed by the number and variety of programs available: "I knew I needed to gather a lot of information before choosing a school, but I really didn't know where to start."

Wake Forest University will no longer require applicants to take the SAT and ACT exams, boosting a movement to lessen the importance of standardized tests in college admissions