Scientists find “strange metal” that behaves in ways they don’t understand
The class of materials, known as strange metals, do not seem to behave according to the usual electrical rules
Man gets genetically-modified pig heart in world-first transplant
He had been deemed ineligible for a human transplant, a decision that is often taken by doctors when the patient is in very poor health
Scientists believed Covid leaked from Wuhan lab but feared debate could hurt “international harmony”
Scientists were particularly concerned by a part of Covid-19 called the furin cleavage site, a section of the spike protein which helps it enter cells
