Scientists tie tightest knot ever 

Knot theory is my favorite branch of math, it is simply awesome. And way more mysterious than anyone could imagine

What about this refreshing song. Neat

Friggin awesome man

This is so cool , I'll build this in my game.

Does anyone know what rendering software have authors use to create this movie of a crystallographic structure?

Missing Spanish or even English subtitles.

))) 50% of an application - army, nice.

8? Why not 16? Seems feasible.

i love trefoils = A = and none of you will get this