A patient with Multiple sclerosis participates in an endurance bike ride to reap the benefits of exercise, and to prove to herself that she can still do it.

Ten years ago it cost 10 million dollars to decipher the first human DNA sequence. University of Utah researchers think soon it will cost about 1,000 dollars.

For thousands of years dogs have wandered the world with humans. Researchers have begun to unravel how that happened.