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The immune system consists of white blood cells that come in about 10 million different types. Each type has a protein lock on it called an "antibody," which corresponds to a key carried by a bacterium called an "antigen." If a key enters that lock, the white cell starts multiplying ferociously in order to produce an…
If you give two programmers the same problem—it depends on the problem, but problems of a more mathematical nature, they can often end up writing the same code. Subject to just formatting issues and relabeling the variables and the function names, it's isomorphic—it's exactly the same algorithms. Are we creating these…
All science, is the searchjnr njQJty in hidden likenesses. The search may be on a grand scale, as in the modern theories which try to link the fields of gravitation and electromagnetism. But we do not need to be browbeaten by the scale of science. There are discoveries to be made by snatching a small likeness from the…
Senator Fowler nodded. "One other little point, Charlie. Just how often do your reproductive castes breed, anyway?" It was Jock who answered. When Charlie hesitated, David Hardy watched with interest-was there communication by gesture? "When they are allowed to," the alien said smoothly. "Don't yours?" "Eh?" "You…
In science, simultaneous macroscopic and microscopic exploration is quite customary, especially in biology. Molecular biology, for example, which derived from the application of chemical analysis to biological problems and led to the discovery of DNA and its function as the carrier of information for every form of…
"You don't see the point of a museum, Horst. It's for the next rise in the Cycles. Savages come to put together another civilization. The faster they can do it, the longer it'll be before another collapse because they'll be expanding their capabilities faster than the population. See? So the savages get their choice…
When you were a tadpole and I was a fish In the Paleozoic time, And side by side on the ebbing tide We sprawled through the ooze and slime, Or skittered with many a caudal flip Through the depths of the Cambrian fen, My heart was rife with the joy of life, For I loved you even then. Mindless we lived and mindless we…
An estimated 181 654 (95% confidence interval: 148 548–214 761) children younger than 2 years of age were treated in emergency departments in the United States for injuries related to cribs, playpens, and bassinets during the 19-year study period. There was an average of 9561 cases per year or an average of 12.1…
Do whatever you can to stop the killing, to bring about peace, and then bring us trees.
Now there are various ways of exterminating a race, and most of them are cruel. You may end it with fire and sword after the old Hebrew fashion; you may enslave it and work it to death, as the Spaniards did the Caribs; you may set it boundaries and then poison it slowly with deleterious commodities, as the Americans…
I got a kick, when I was a boy, [out] of my father telling me things, so I tried to tell my son things that were interesting about the world. When he was very small we used to rock him to bed, you know, and tell him stories, and I'd make up a story about little people that were about so high [who] would walk along and…
So presently to bed and to sleep, but not at once to sleep. At first my brain, like a dog in unfamiliar quarters, must turn itself round for a time or so before it lies down
The first chart of the Gulf Stream was prepared about 1769 under the direction of Benjamin Franklin while he was Deputy Postmaster General of the Colonies. The Board of Customs in Boston had complained that the mail packets coming from England took two weeks longer to make the westward crossing that did the Rhode…
The distinctive characteristic of the Analytical Engine, and that which has rendered it possible to endow mechanism with such extensive faculties as bid fair to make this engine the executive right-hand of abstract algebra, is the introduction into it of the principle which Jacquard devised for regulating, by means of…
The electric light is pure information. It is a medium without a message, as it were, unless it is used to spell out some verbal ad or name. This fact, characteristic of all media, means that the "content" of any medium is always another medium. the content of writing is speech, just as the written word is the content…