Metals have a crystal structure. But they're not one big crystal, they're lots of small crystals called grains. The size of the grains affects the physical properties of the metal, like hardness, toughness,... continue reading

posted by newtboy 3 years 5 months ago • 135 views • 8:45

For the past 50 years, kung fu master Li Liangui has been contorting his body into seemingly impossible positions as he practices one of the more unusual Chinese martial arts. The 70-year-old is an expert... continue reading

posted by Mordhaus 7 years 10 months 1 week ago • 335 views • 2:18