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Over the years, dairy producers and food scientists have found a multitude of uses for whey, the byproduct of cheese-making. Now, German scientists have found a way to turn it into plastic.

Wisconsin Gov. Scott Walker came to Washington on Thursday to talk up the merits of the anti-union legislation that has landed him in hot water — and to raise funds to save his job.

CBS has revamped its morning show, which now has new hosts, a new set and a new focus: more hard news, less soft entertainment. TV critic David Bianculli says the new format works — as long as the network makes good on its news-oriented focus.

Iran's navy drill, which could bring its ships into proximity with U.S. Navy vessels that operate in the same area, is Iran's latest show of strength in the face of mounting international criticism over its nuclear program.

America's Big Three automakers experienced double-digit sales growth in 2011, helping the U.S. market continue its rebound from a dismal 2009. With annual reports out today, Chrysler says its sales were up 26 percent, while General Motors and Ford Motor Co. reporting gains of 13 and 11 percent, respectively.

One of the last remaining Navajo Code Talkers from World War II has died. Keith Little, who transmitted codes in important Pacific battles such as Iwo Jima and Saipan, died Tuesday at 87. He led the Navajo Code Talkers Association in recent years and fought to get recognition for the Code Talkers, who were ordered to keep their contribution to the war effort secret for decades after the war ended.

The NBA's Christmas gift to fans this year is a full slate of marquee matchups. The lockout-delayed season officially opens Sunday with five highly anticipated games. NPR's Mike Pesca joins host Audie Cornish for a look at what to expect.

Republican presidential hopeful Rick Perry has been aboard a bus touring Iowa hoping to score an upset in next Tuesday's caucuses. Perry spent Thursday trying to reverse the surge that challenger Rick Santorum has seen in a recent poll.

On Jan. 3, all across Iowa, the campaigning ends and the voting begins. Thousands of Iowans will enter gyms, libraries and private homes to participate in a ritual of the American political system.

Social media has become a huge part of how people experience the web. So it's not surprising that Google's move to integrate "personal results" into its search results — drawing from the Google+ community — wasn't praised by the folks who run rival social networks.