Macro

When choosing a protein powder, we want it to be low in sugar and carbs, and to taste good enough. We don't think that it might also be packed with dangerously high levels of lead – which, a new study finds, is exactly what is in many popular brands.

Quantum entanglement is the idea that two distant atoms can become so entwined that changes to one can instantly affect the other. Now scientists have managed to demonstrate it on a much larger scale, which is beginning to cross over into our everyday world.