Guest post by Laura SandersIt may look like a child’s stacking toy, but a colorful assembly of concentric layers is actually a three-dimensional model of a brain. A series of porous doughnuts, made from proteins taken from silkworm cocoons, serve as scaffolds for rat nerve cells to populate.The

When dolphins and whales squeal, they may not be sending food signals to their friends. They could just be shrieking with pleasure.After measuring the time delay between a dolphin or whale receiving a reward and the animal's squeal, one researcher noticed the lags were about as long as the time it