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Immunologist Daniel Davis says scientists are harnessing the power of the immune system to create new medications to fight cancer, auto-immune conditions and other diseases.

Comedian and actor A.J. Johnson has died at age 55. Johnson starred as Ezal, a homeless man with drug addiction, in Ice Cube's Friday.

Guitar legend Les Paul is about to turn 90 and still going strong. He plays weekly at New York's Iridium Jazz Club, and he has a string of new albums coming out. Tom Vitale visits with Paul in New York.

Katrina evacuees offer reaction to President Bush's speech from New Orleans. Some say they are unsure what to believe after a sluggish government response as they fought to escape Katrina's aftermath.

President Bush says the new energy bill won't bring down gasoline prices right away but would make a contribution to long-term energy independence. The president interrupted his vacation in Texas to visit the Sandia laboratory near Albuquerque, N.M., where he signed the bill into law.

After being barred from performing at Constitution Hall in 1939 because she was black, opera singer Marian Anderson gave a performance on the steps of the Lincoln Memorial. Author Raymond Arsenault's new book, The Sound of Freedom, reflects on the cultural significance of Anderson's performance that Easter.

Harris hollered her way into TV history as George Costanza's short-fused mother on "Seinfeld" and voiced Mrs. Potato Head in the "Toy Story" franchise. She was 93.

The Nap Ministry is an organization that promotes the healing power of naps and the idea that rest is a form of resistance.

The renowned physicist and cosmologist says the U.S. pulling out of the Paris climate change accord could turn our planet into another Venus.

Gov. Bruce Rauner hasn’t been the most predictable when it comes to funding public schools.He vetoed a major funding reform bill in August because it gave…