Sleep helps these cells grow and connect, so if we think of our brain as a tree, sleep is like the miracle grow, and while we sleep, all the tiny branches will grow and flourish.
We can actually take some little sticks of this and graft it, insert it into the wood of that other tree and this will start to grow and it will be a Colorado Orange tree.
Jane observed the chimpanzee, Greybeard, finding small wooden branches called twigs and modifying them - changing them slightly in order to improve them.
The windshield was now trembling under a hail of blows from knuckle-like twigs and a branch as thick as a battering ram was pounding furiously on the roof, which seemed to be caving in.
So absolutely incredible, this started as just a couple of twigs across the stream bed and as you can see now, you know, we've got almost a meter difference in height between the water upstream and the water downstream.