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Too much sleep, too little sleep or disrupted sleep may put people at risk for heart disease. A study finds a link between poor quality sleep patterns and a buildup of calcium in the arteries.

John Paul II urged openness during his 1998 tour of the island, but progress has been slow in the 17 years since. Pope Francis, who helped reopen U.S. relations, arrives next week.

Most potential new drugs don't work when tested in people. It's a major disappointment and it drives up the cost of developing new drugs. One big reason is the use of animals in medical research.

Apple was once considered the most innovative company in the tech sector. But by some accounts, it's being shown up by products from Amazon, Microsoft and now Samsung.

In a hearing marked by moments of tension and humor, Trump and Justice Department lawyers clashed over how the federal election interference case against the former president should proceed.

In his new book, Stephen Breyer details cases involving the interdependence of law in the U.S. and other countries. No branch of government can avoid dealing with global issues any more, he said.

A University of Cincinnati officer faces murder charges for the traffic stop death of Samuel DuBose, and now critics are questioning the growing trend of giving campus cops weapons.

The legendary musician worked with everyone from Ray Price to Ray Charles while making a complicated instrument seem effortless. He died Wednesday at 78.

By necessity, Vice President Harris has worked in lockstep with President Biden on his foreign policy. What she would do in the White House if she wins on Nov. 5 will be in focus in Tuesday's debate.

In a last-minute move, Hunter Biden pleaded guilty to tax charges Thursday, avoiding what could have been an embarrassing trial.