Feb. 25, 2018, 5:43 p.m.
Rompecabezas cúbicos
Además del famoso cubo de Rubik, hay otros cubos de piezas móviles que son un desafío para nuestra capacidad combinatoria
tutti - social network
Tutti is the simplest social network on internet. Here you can make friends, create communities, sell things, make surveys, comment and share stuff.
With each peck, woodpeckers absorb more than ten times the force it would take to give a human a concussion. But they seem fine. Researchers examined the brains of woodpeckers in museum collections and saw that the brains showed a build-up of a protein that's a sign of brain damage in humans. The woodpeckers might not have sustained brain damage themselves, though -- the researchers think that protein build-up could possibly be beneficial to the birds.https://www.sciencedaily.com/releases/2018/02/180202140910.htm
