A customer shops for nectarines at a farmers market on June 13, 2012 in San Francisco, California.

Three major grocery distributors are recalling fruit believed to be infected with Listeria.

The harbor seal (Phoca vitulina) is released into the new pavilion at the Zoo in Usti nad Labem on October 7, 2013 in Usti nad Labem, Czech Republic.

GPS-tracker tagged harbor seals have been hunting at the bases of wind turbines.

A young Cambodian uses an upper body weight training machine in an outdoor public gym along Phnom Penh's riverside on May 25, 2014 in Phnom Penh, Cambodia.

A study shows that lack of exercise is more to blame for obesity trends than overeating.

South Korean students pose in the shape of the 'aids ribbon' during an event to promote the awareness of Aids at Cheonggyecheon on December 1, 2013 in Seoul, South Korea.

Research suggests untouchable "viral reservoirs" form even before H.I.V. can be detected in the blood.

Wheat grows in the field of farmer Abbas Hamamian on June 3, 2014 in Meymeh, Iran.

Mapping the genome could help with growing more of the product in the future.