Credit Melissa Farlow / National Geographic/Getty Images
Crew members unload a catch of sockeye salmon at Craig, Alaska, in 2005. Researchers say fish are being found in new areas because of changing ocean temperatures.
Climate change is gradually altering the fish that end up on ice in seafood counters around the world, according to a new study.
"The composition of the [global] fish catch includes more and more fish from the warmer areas, and cold-water fish are getting more rare, because the temperatures are increasing," says Daniel Pauly at the University of British Columbia, a co-author of the study.
Scientists say they have, for the first time, cloned human embryos capable of producing embryonic stem cells.
The accomplishment is a long-sought step toward harnessing the potential power of embryonic stem cells to treat many human diseases. But the work also raises a host of ethical concerns.
Credit Erik Hill/Anchorage Daily News / MCT/Landov
A family friend posts fliers after Samantha Koenig's disappearance in 2012. Koenig's father is now an advocate for a mandatory national missing persons database.
Credit Daysha Eaton / KSKA
A map at the Anchorage Police Department tracks the travels of confessed killer Israel Keyes. Investigators say the lack of a unified missing persons database is frustrating efforts to identify other potential victims.
A serial killer who committed suicide in an Alaska jail last year confessed to murdering at least 11 people across the country. But Israel Keyes didn't name names, and investigators trying to figure out who he killed are running into a major stumbling block: There is no unified, mandatory national database for missing persons.