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At the time when the lines begin, in the mid-18th century, life expectancy in Europe and the Americas was around 35, where it had been parked for the 225 previous years for which we have data.3 Life expectancy for the world as a whole was 29. These numbers are in the range of expected life spans for most of human…
Most common are the fictions that begin with Jules Verne, and concern the single artifact—a submarine, flying machine, or death ray—and its consquence for all of humanity. These extraordinary voyages—to use Verne's term—play along the fault line between what we think we are and what we can do. Nemo is no accident, or…
Nowadays when someone speaks of "art" you probably think first of "fine arts" such as painting and sculpture, but before the twentieth century the word was generally used in quite a different sense. Since this older meaning of "art" still survives in many idioms, especially when we are contrasting art with science, I…
Science, with its naturalistic approach to understanding the empirical world, has become the dominant standard against which alternative systems of knowledge production must argue. Over the course of the twentieth century, some denominations have reconciled particular truths of Christianity and science. However…
In 1905, at a gathering of the world’s greatest minds in the physical sciences, Henri Poincare´ reflected on the rapid progress of scientific inquiry and the means through which the scientific community at the turn of the twentieth century and beyond would refine our understanding of the world. In his historical…
As we approach the end of the twentieth century, we are witnessing the emergence of a new kind of social scientist-the non-verbalist. Just as the birdwatcher delights in watching birds and their behaviour, so the non-verbalist delights in watching the non-verbal cues and signals of human beings. He watches them at…
Here's the rub. In Newton's theory of gravity, one body exerts a gravitational pull on another with a strength determined solely by the mass of the objects involved and the magnitude of their separation. The strength has nothing to do with how long the objects have been in each other's presence. This means that if…
At the very beginning of the twentieth century competent scientific and lay opinion held that airplanes were impossible. The end of the century, barring the dark specter of nuclear or ecological catastrophes, will probably see joint Soviet and American manned space expeditions to the nearer planets. This is the…
The harder we look at the border between life and non-life, the more elusive does the distinction become. Life, the animate, was supposed to have some sort of vibrant, throbbing quality, some vital essence - made to sound yet more mysterious when dropped into French: elan vital. Life, it seemed, was made of a special…
rhe systematic development of knowledge and technology that we all 'science' originated in the millennia of prehistory, and early vomen were among these first 'scientists'. They invented tools, accumulated knowledge about edible and medicinal plants, and 3robably discovered 'the chemistry of pot-making, the physics of…
Atheism and freethought trace their roots to ancient Greek philosophy, with its emphasis on rational inquiry and curiosity about the workings of nature. Other sources included early Chinese Confucianism, ancient Indian materialists, and Roman Stoics, Epicureans, and Skeptics. Submerged during the Dark Ages…