Republicans fight for New Hampshire

The gloves are coming off as Republican presidential candidates make their last-minute push ahead of the New Hampshire primary. NBC’s Tracie…

Researchers at the Mayo Clinic have figured out a way to significantly extend the lifespan of mice, and hope the findings can eventually improve the health of humans.

Fountain of Youth at Mayo Clinic?

Researchers at the Mayo Clinic have figured out a way to significantly extend the lifespan of mice, and hope the findings can eventually imp…