(via Kurzgesagt) Getting a tattoo itself might be a dramatic event for your immune system, but things get even crazier when you try to remove them! From intense lasers, to shockwaves and exploding ...

(via Kurzgesagt) Fever feels bad. So we take medication to suppress it – but is this a good idea? It turns out fever is one of the oldest defenses against disease. What exactly is a fever, and how ...