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Four of the six concourses were emptied and roadways closed after a screener saw something suspicious in a checked bag.A passenger was detained and four of Miami International Airport's six concourses along with an onsite hotel were evacuated after a screener spotted something suspicious in a checked bag, authorities said.

Scientists returning from a 30-day research expedition to the Northwestern Hawaiian Islands found what they believe are 10 new species of co ...

Earthquakes strike along California's San Andreas Fault more often than scientists previously thought, and think it's more than likely a major quake could happen soon,  a new study suggests.

Scientist Paul Wooley has regrown a section of bone in a mammal's leg, a breakthrough he and collaborators say will revolutionize bone medicine worldwide.

For researchers, a key to studying any cancer is finding its "cell of origin." Now scientists at the University of California at Los Angeles say they've found just that -- a specific type of cell that gives rise to prostate cancer.

Scientists celebrated Sunday after finding more than 700 suspected new planets -- including up to 140 similar in size to Earth -- in just six weeks of using a powerful new space observatory.

How can one jellyfish sting up to 100 people? With lots of stinger-equipped tentacles, the largest jellyfish in the world may be up to the job, though scientists aren't sure if this week's mass stinging was the result of one jellyfish or more than one.

A huge ball of brightly burning gas drifting through a neighboring galaxy may be the heaviest star ever discovered - hundreds of times more massive than the sun, scientists said Wednesday after working out its weight for the first time.

Many low-income urban areas across the United States have epidemics of HIV, with 2.1 percent of heterosexuals in poverty-stricken urban areas infected with the incurable AIDS virus, U.S. scientists said on Monday.

Iranian nuclear scientist who says he was abducted and tortured by U.S. agents was an informant inside Iran for several years, report says.