According to reviews, your new friends can stay fresh and squishable up to three days out of water and can retain their shape ...

Real workers share the holiday side gigs they regret taking -- from mall kiosks to ski lessons. Learn the warning signs ...

Learn eco-friendly DIY holiday gift wrap techniques using recycled materials for personalized, sustainable presents. Inspired ...

An illustration of a magnifying glass. An illustration of a magnifying glass.

This is a repository for a completely FREE and open source book about the mathematics (and some usage of) spinors. It is based with permission on the phenomenal playlist by Eigenchris (NOTE: still WIP ...