Zipper rings from around the web

(clockwise from top left) me, elisaetemadjewellery.co.uk, meganleone at etsy, forever21 (?!), and Doris Viñas.

I've been looking for a new way to make the ring part, but it looks like people mostly use elastic.

YouTube as evidence source for peer reviewed biology research

You can't make this up:

Video Database Analyses

The global database used, www.youtube.com, is a video-sharing website consisting of tens of millions of user contributions from a wide range of people across the globe. Users commonly post animal behavior on YouTube...