'How to' sites

I found this list of 'How to' web sites. For me is very curious and I believe that it will give some entertainment for everyone.

Source: Makeofuse

Fastest animal

Apparently the fastest animal is the Peregrine Falcon (Falco peregrinus). In the movie we can see a scientist proving it. The falcon is diving steeply at speed of 389 km/h (242 m/h).

Source: Wikipedia, National Geographic