Ellen DeGeneres makes her much-anticipated debut on "American Idol" on Tuesday, shaking up the dynamics on the show's judging panel and auditioning her own talents for the biggest TV audience in the United States. Read more »

It had to happen sometime, but nobody expected the biggest film of all time to lose its North American box office crown this weekend to "Dear John," a low-budget "chick flick" with a pair of little-known stars. Read more »

After airing the Golden Globes live coast-to-coast for the first time last month, NBC is considering doing the same for the Emmys. Read more »

The Who took the stage for the Super Bowl halftime show in Miami on Sunday, and delivered a solid if expected medley of classic rock hits. Read more »

Bookseller Barnes & Noble Inc. said on Monday that its Nook electronic reader would be available in most of its physical stores as of Wednesday, ahead of Valentine's Day, ending weeks of delays. Read more »

Blogging by teenagers and young adults has dropped by half over the past three years as they turn instead to texting and social networking sites such as Facebook, a new study shows. Read more »

Internet search firm Google is finalizing a deal that would let the National Security Agency help it investigate a corporate espionage attack that may have originated in China, the Washington Post reported on Thursday. Read more »

People who spend a lot of time surfing the internet are more likely to show signs of depression, British scientists said on Wednesday. Read more »

A once-a-day pill helped completely rebuild bone in rodents with severe osteoporosis, a finding that could lead to a new class of drugs to treat the brittle-bone disease in humans, U.S. researchers said. Read more »

Men who don't smoke and eat a lot of soy may have a lower risk of lung cancer, according to a new study. Read more »

The saturated fat found mainly in meat and dairy products has a bad reputation, but a new analysis of published studies finds no clear link between people's intake of saturated fat and their risk of developing heart disease. Read more »

Girls with attention-deficit hyperactivity disorder are more likely than their peers to develop depression, anxiety, eating disorders or other psychiatric problems by the time they reach adulthood, a new study suggests. Read more »

The S&P 500 and Nasdaq edged higher on Monday as several bellwethers rose on brokerage upgrades and positive comments about the economy, but worries about euro zone sovereign debt problems limited gains. Read more »

The unemployment rate surprisingly fell to a five-month low in January and factory payrolls grew for the first time since 2007, hinting at a labor market recovery even though the economy lost 20,000 jobs. Read more »

Oil prices plunged more than 5 percent on Thursday in their steepest one-day drop since July, after a rise in U.S. jobless claims and spreading concern over Europe's economic health drove investors to sell commodities and seek less risky assets. Read more »

The Obama administration stepped up the pressure on Toyota Motor Corp on Wednesday to address a range of safety issues as investors and consumers reacted to the deepening crisis for the world's largest automaker. Read more »