Quotes from Bill Bryson

The Earth thus started off with vast supplies of heat inside it, and a rocky planet, like any other rock, takes a long time to cool down. Stones in a campfire may still be hot the morning after; a stone the size of the Earth can hold heat for billions of years.

Nearly everyone I talked to had some gruesome story involving a guileless acquaintance who had gone off hiking the trail with high hopes and new boots and come stumbling back two days later with a bobcat attached to his head or dripping blood from an armless sleeve and whispering in a hoarse voice, "Bear!" before sinking into a troubled unconsciousness.

remote in time from us the Cambrian outburst was. If you could fly backwards into the past at the rate of one year per second, it would take you about half an hour to reach the time of Christ, and a little over three weeks to get back to the beginnings of human life. But it would take you twenty years to reach the dawn of the Cambrian period. It was, in other words, an extremely long time ago and the world was a very different

For a long time it puzzled me how something so expensive, so leading edge, could be so useless, and then it occurred to me that a computer is a stupid machine with the ability to do incredibly smart things, while computer programmers are smart people with the ability to do incredibly stupid things. They are, in short, a perfect match.

future. As an adjective, the word is often used unnecessarily: 'He refused to say what his future plans were' (Daily Telegraph); 'The parties are prepared to say little about how they see their future prospects' (The Times). In both sentences, and nearly all others like them, future adds nothing and should be deleted.

A child half your height who falls and strikes her head will experience only 1/32 of the force of impact that a grown person would feel, which is part of the reason that children so often seem to be mercifully indestructible.15

The upward flow of ancient heat to the Earth's surface is measured in tens of milliwatts per square metre; the flow from the Sun above is measured in hundreds of watts per square metre.

The average adult touches his face sixteen times an hour

Balchen happened to be at the wheel." This was breathtakingly disingenuous. In fact, Balchen had been flying for hours and very probably saved all their lives with his skillful landing. The

Just reaching the centre of our own galaxy would take far longer than we have existed as beings.

The most remarkable part of all is your DNA. You have a metre of it packed into every cell, and so many cells that if you formed all the DNA in your body into a single fine strand it would stretch ten billion miles, to beyond Pluto.8 Think of it: there is enough of you to leave the solar system. You are in the most literal sense cosmic.

The amount of energy actually liberated in the burning of these fossil fuels is tiny by planetary scales – ten terawatts or so a year, not that much more than the nuga-tory contribution made by the tides. But the side effects are huge.

Still weakened, he finally made it onto a ship. It was nearly wrecked in a hurricane off the African coast. When at last he reached home, eleven and a half years after setting off, and having achieved nothing, he discovered that his relatives had had him declared dead in his absence and had enthusiastically plundered his estate.

It is easy to overlook this thought that life just is. As humans we are inclined to feel that life must have a point. We have plans and aspirations and desires. We want to take constant advantage of all the intoxicating existence we've been endowed with. But what's life to a lichen? Yet its impulse to exist, to be, is every bit as strong as ours – arguably even stronger.

Sheepskin is a marvelously durable medium, though it has to be treated with some care. Whereas ink soaks into the fibers on paper, on sheepskin it stays on the surface, rather like chalk on a blackboard, and so can be rubbed away comparatively easily. "Sixteenth-century paper was of good quality, too," he went on. "It was made of rags and was virtually acid free, so it has lasted very well.

Oxygen levels in the Devonian and Carboniferous periods, when terrestrial life first bloomed, were as high as 35 percent (as opposed to nearer 20 percent now). This allowed animals to grow remarkably large remarkably quickly.

A full moon rose in the pale evening sky and glowed with a rich white inner light that brought to mind, but perfectly, the creamy inside of an Oreo cookie. (Eventually on the trail everything reminds you of food.)

Elizabethans were as free with their handwriting as they were with their spelling. Handbooks of handwriting suggested up to twenty different—often very different—ways of shaping particular letters.

It was Broom's habit, for instance, to do his fieldwork naked when the weather was warm, which was often. He was also known for conducting dubious anatomical experiments on his poorer and more tractable patients. When the patients died, which was also often, he would sometimes bury their bodies in his back garden to dig up for study later.

an atom with an abnormal number of neutrons.)

published in 1980, John McPhee noted that even then one American geologist in eight still didn't believe in plate tectonics. Today

As well as strengthening bones, exercise boosts your immune system, nurtures hormones, lessens the risk of getting diabetes and a number of cancers (including breast and colorectal), improves mood, and even staves off senility.

New Zealand, meanwhile, is part of the immense Indian Ocean plate even though it is nowhere near the Indian Ocean.

Stoically, Le Gentil packed up his instruments and set off for the nearest port, but en route he contracted dysentery and was laid up for nearly a year.