Much remains biologically uncertain about COVID-19, especially when it comes to its infectiousness. For example, how many particles must be taken to allow the virus to begin to replicate within oneself? On the other hand, the virus particle itself is subject to well-established laws of physics. So, when it comes to masks and social distancing, how can physics inform our understanding? Let's take a look.
A new research study on the penetration mechanics of the beetle penis – its bending stiffness gradient compounded by its soft tip – could actually hold some promise in the medical-device realm of catheter design to further the understanding in erectile dysfunction.
Tony Robbins is a motivational speaker and self-help guru who believes in "magic moments." He encourages guests to walk over a pit of burning coals, which often isn't as magical as planned.