Used in everything from bullet-proof vests to the walls of the Pentagon, polyurea’s strength comes from its long-chain molecules.
Vsauce host Michael Stevens digs deep into the ever-changing concept of the direction “down,” what causes things to fall, and digs into how masses really, really want to pull towards each other in our universe, thanks to gravitational forces.
Here’s 50+ Of Her Best Transformations: Link
When you’re feeling anxious or stressed, your body releases stress hormones, such as adrenaline and cortisol…
Nutrition during the first few years of life has a huge impact on adult height, and since nutrition has been getting better over time, humanity – including your family – is getting taller.