The purpose of learning is growth, and our minds, unlike our bodies, can continue growing as we continue to live.
A carbon nanotube is just a graphene sheet that's rolled up seamlessly, and this happens in nature; carbon nanotubes are found in mineral deposits around the planet.
I've done jiujitsu a huge chunk of my life, and I try to spend a lot of time educating people on the nuances, the subtleness of the ground game. It's a big part of mixed martial arts.
For un-subscribe please check the mail footer.