“Bipedalism is a demanding and risky strategy. It means refashioning the pelvis into a full load-bearing instrument. To preserve the required strength, the birth canal in the female must be comparatively narrow. This has two very significant immediate consequences and one longer-term one. First, it means a lot of pain for any birthing mother and greatly increased danger of fatality to mother and baby both. Moreover, to get the baby's head through such a tight space it must be born while it's brain is still small - and while the baby, therefore, is still helpless. This means long-term infant care, which in turn implies solid male-female bonding.”

“No one knows, incidentally, why Australia's spiders are so extravagantly toxic; capturing small insects and injecting them with enough poison to drop a horse would appear to be the most literal case of overkill. Still, it does mean that everyone gives them lots of space.”

“In office buildings and retail premises in which entry is through double doors and one of those doors is locked for no reason, the door must bear a large sign saying: “This Door Is Locked for No Reason.”

“These Cro-Magnon people were identical to us: they had the same physique, the same brain, the same looks. And, unlike all previous hominids who roamed the earth, they could choke on food. That may seem a trifling point, but the slight evolutionary change that pushed man's larynx deeper into his throat, and thus made choking a possibility, also brought with it the possibility of sophisticated, well articulated speech. Other mammals have no contact between their air passages and oesophagi. They can breathe and swallow at the same time, and there is no possibility of food going down the wrong way. But with Homo sapiens food and drink must pass over the larynx on the way to the gullet and thus there is a constant risk that some will be inadvertently inhaled. In modern humans, the lowered larynx isn't in position from birth. It descends sometime between the ages of three and five months - curiously, the precise period when babies are likely to suffer from Sudden Infant Death Syndrome. At all events, the descended larynx explains why you can speak and your dog cannot.”

“As we parted at the Natural History Museum in London, I asked Richard Fortey how science ensures that when one person goes there's someone ready to take his place.He chuckled rather heartily at my naiveté. 'I'm afraid it's not as if we have substitutes sitting on the bench somewhere waiting to be called in to play. When a specialist retires or, even more unfortunately, dies, that can bring a stop to things in that field, sometimes for a very long while.'And I suppose that's why you value someone who spends forty-two years studying a single species of plant, even if it doesn't produce anything terribly new?''Precisely,' he said, 'precisely.' And he really seemed to mean it.”

“From that original colony sprang seven names that still feature on the landscape: Roanoke (which has the distinction of being the first Indian word borrowed by English settlers), Cape Fear, Cape Hatteras, the Chowan and Neuse Rivers, Chesapeake, and Virginia. (Previously, Virginia had been called Windgancon, meaning "what gay clothes you wear" - apparently what the locals had replied when an early reconnoitering party had asked the place's name.)”

“Originally, the cellar served primarily as a coal store. Today it holds the boiler, idle suitcases, out-of-season sporting equipment, and many sealed cardboard boxes that are almost never opened but are always carefully transferred from house to house with every move in the belief that one day someone might want some baby clothes that have been kept in a box for twenty-five years.”