A fibrous path 'twixt heart and brain may make you swoon
A newly discovered pathway between the heart and brain can cause fainting, at least in mice.
heart
Harvard Scientists Call For Better Rules To Guide Research On 'Embryoids'
Some recent studies in synthetic biology, they say, raise new questions about the ethical limits of creating entities that might feel pain or resemble human embryos — or mimic humans in other ways.
Synthetic Stingray May Lead To A Better Artificial Heart
Using gold, silicone and heart cells from a rat, scientists have made a tiny artificial stingray. The engineering involved in propelling it could help make a heart that's more than a mechanical pump.
A Fitbit Saved His Life? Well, Maybe
A man shows up in the emergency room with a speedy, irregular heartbeat, but can't say when it first went awry. No problem. The ER doctors just checked the phone records of his fitness tracker.
Can Extreme Exercise Hurt Your Heart? Swim The Pacific To Find Out
Ben Lecomte wants to be the first person to swim across the Pacific Ocean — a 5,500-mile journey. Doctors will monitor his heart remotely to see how intensive exercise affects this vital muscle.
Why No Love For Twitter's Hearts?
Twitter changed its "favorite" icon from a yellow star to a red heart. Twitter users aren't loving it, but NPR's social science correspondent Shankar Vedantam predicts it's just a matter of time.
Dietary Supplements Send Thousands To ERs Yearly
More than 23,000 Americans end up in emergency rooms each year after taking dietary supplements, an analysis shows. Most cases are linked to weight-loss products or energy-boosting supplements.
A Metronome Can Help Set The CPR Beat
Good CPR requires 100 to 120 chest compressions per minute. If you go too fast or too slow it's not as effective. Researchers say using a metronome helps medical providers maintain the right pace.