What you need to know about the new implants to patch up failing hearts. Are they really a 'breakthrough'?
There are many difficulties in converting any biological research into a medicine that will treat patients. Because of the ...
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Earth's inner core is less solid than previously thought
Located 3,000 miles below the Earth's surface, the inner core is anchored by gravity within the molten liquid outer core. Until now the inner core was widely thought of as a solid sphere.