I showed him a newsboy shouting the
midday paper, and a No. 73 bus going past, and before he reached the bottom
of the stairs I had got into him an unalterable conviction that, whatever odd ideas might come into a man's head when he was shut up alone in his books, a healthy
dose of «real life» (by which he meant the bus and the newsboy) was enough to show him that all «that sort
of thing» just couldn't be true.
In the new study, shaved mice got a daily
dose of UV light long enough to tan but not burn — on a par with 20 to 30 minutes in
midday Florida sun for a fair - skinned human.