› added 5 years ago

238

TIL that only specific types of sand are useful in important building materials like concrete. This has creates a shortage of sand in some areas leading to black markets for illegally mined sand run by sand mafias and sand pirates.

Read more npr.org

via reddit.com

x6LLD TIL that Harry Redknapp once brought a fan on to play for West Ham in a preseason friendly.
OGG5R TIL about The Confess Project, a non-profit which trains barbers to be mental health advocates for black men. Normalizing discussions of mental health within a community heavy on MH stigma.
NAbJ TIL A man who lied about passing his second year of university, pretended to continue his study, crafting an elaborate lie until everyone he knew thought he was a medical doctor. No one found out for 18 years, until he killed his entire family to avoid being revealed.
gM7dX TIL if you put water droplets on a hot pan they never actually touch the pan. A vapor layer forms that makes them float. This phenomenon is an example of the Leidenfrost effect.
xVvG0 TIL that Steve Jobs often went to his biological father's Mediterranean restaurant in San Jose and even shook his hand. At the time, his dad didn't know that Jobs was the baby he gave away for adoption, and Jobs didn't know that he was his father.