1/12: Iran nuclear deal: Details released; Whales make a comeback in California

Iran has agreed to stop all enrichment of uranium starting Jan. 20. In exchange, the U.S. and its allies will provide gradual relief from economic sanctions, valued at about $7 billion; and, Despite ongoing threats of extinction, sightings of whales of all kinds have been on the increase in the Pacific coastal waters off California, but scientists say this doesn't mean the whale population is rebounding yet.