Science

An investigational device that deflects debris away from the brain during transcatheter aortic valve replacement seems to improve in-hospital safety outcomes and cognitive scores...

The SAPIEN 3 heart valve demonstrated lower death, stroke and paravalvular leak rates than earlier generation devices in patients at high risk for surgery...
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Ruby-throated hummingbirds can overcome changing winds to feed on nectar, using rapid wing and tail adjustments to hold steady. ...read...

Meet GuardBot, a spherical surveillance vehicle that can swim upstream. CNN's Thom Patterson explains how the military hopes to use it. ...
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An unconventional research method allow planetary scientists to develop digital terrain models -- think Google Earth on steroids -- of geologic features on Earth,...
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A study comparing the overall economics of computed tomographic angiography with functional stress tests for evaluating patients with symptoms suggestive of possible blocked coronary...
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Adding the antiplatelet drug ticagrelor to aspirin as long-term therapy after a heart attack significantly reduced the rate of subsequent death from cardiovascular causes,...
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Patients with symptoms of heart disease have similar outcomes in terms of death and major cardiac conditions regardless of whether they undergo a functional...
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A rare and threatened Caribbean coral species has for the first time been successfully bred and raised in the lab, according to new research....

Why Ebola isn't airborne: CNN's Dr. Sanjay Gupta explains, using a metal pipe, marbles, baby powder and a baseball