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TEN THOUSAND YEARS AGO, humans learned how to farm. It was an epochal invention that made possible settled life, cities, craft specialization, writing, organized religion, architecture, mathematics. science. Now humanity stands on the brink of a second agricultural revolution potentially as great as the one that…
My 165-pound body consists of about 110 pounds of oxygen, 30 pounds of carbon, 16 pounds of hydrogen, 6 pounds of nitrogen, and 3 pounds of everything else. Basic stuff, mostly, the stuff of water and air. You'd think we could get almost everything we need to build our bodies by taking deep breaths and gulps of water…
31 I believe a leaf of grass is no less than the journey work of the stars, And the pismire is equally perfect, and a grain of sand, and the egg of the wren, And the tree-toad is a chef-d'oeuvre for the highest, And the running blackberry would adorn the parlors of heaven, And the narrowest hinge in my hand puts to…
Seizing on yet another natural experiment, Almond examined the impact of the introduction of the food-stamp program in the late 1960s and early 1970s. The program was rolled out on a state-by-state basis, allowing Almond to compare birth outcomes for poor women who received food assistance during pregnancy to those…
Early in the twenty-first century, the old dualism of matter and spirit seems irrelevant. In the new theories of physicists, the fundamental material particles—protons, neutrons, electrons—dissolve into a kind of cosmic music, all resonances, vibrations, and spooky entanglements. Matter has revealed itself as a thing…
This much is certain: The future of the planet wall not be a reprise of the past, a return to "a state of nature." The future will certainly be technological, increasingly globally homogeneous, and, in the short run at least, will embody the connectivity of the computer chip and the contrivances of genetic…
Spring provides a kind of annual recapitulation of the evolution of life on Earth, an opportunity to celebrate anew the greening of the planet three and a half billion years ago by the first photosynthesizing bacteria. All life—the whole glorious parade along the path—depends upon the photosynthesizers. As spring…
When the first single-celled organisms appeared on Earth, more than 3 billion years ago, they fed upon carbohydrates—sugars—dissolved in the sea. The sugars had their origin in chance chemical reactions. Life, however, multiplied exponentially; one cell made two, two made four, four made eight, and so on. Self…
In fact, an early clue to the potential risks posed by plastic was discovered entirely by accident. In August of 1998, Washington State University geneticist Patricia Hunt found herself baffled by an unexpected development in her lab. Hunt was using experiments on lab mice to explore why the eggs of older women are…
“Make your plate colorful,” she had advised, and the late-summer bounty makes that easy: into the cart go red tomatoes (full of beneficial carotenoids), orange yams (rich in vitamin A), and green spinach (lots of calcium and iron). Eating a variety of fruits and vegetables of different colors, Michels had explained…
I dive deep into the research, its strong currents pushing me first one way—fish is good!—and then the other—mercury is bad!—and finally surface with a seemingly obvious conclusion: eat fish, lots of it, just not the mercury-laden kind. This is harder than it sounds. Fish, to me, has meant a pink slab of tuna steak or…
The relative interattractiveness invisibly operative between any two remote-from-one-another cosmic bodies, as compared to any other pair of cosmic bodies, equally distanced from one another, is proportional to the multiplicative product of the respective couple's masses, and the interattractiveness of any pair of…
I don't know how other prospective fathers treat their wives' pregnancies, but I saw it as a science project. It had a protocol, parameters, a timeline, and even the one item that makes funding agencies happy: a deliverable. I found myself poking at my wife's abdomen, asking, "Who's Daddy's little gestating…
184a Since, in all pursuits in which there are sources or causes or elements, it is by way of our acquaintance with these that knowing and understanding come to us (for we regard ourselves as knowing each thing whenever we are acquainted with its first causes and first beginnings, even down to its elements), it is…
Beer commercials are notorious for this kind of treatment. "Sell the sizzle, not the steak," goes the advertising truism. Well, why not? When you're pushing a product made from rotten vegetation whose primary effects are to dull your wits, pad your paunch, and make you belch, any sizzle would be a big help.
Advertisers, politicians, and anyone else who wants your money or support are very interested in programming you with certain distinctions over others and understanding the distinctions you see the world through so that they can take advantage of them. What are you more likely to buy for breakfast: a slice of…
Imagine for a while the nature of the changes in his world that occurred at birth. From 98.6-degree warmth to 70-degree room temperature. From total darkness to glaring overhead lights in the hospital. From relative quiet, where instead of mother's familiar voice and the soothing rhythmical sounds of her body (her…
The swim bladder is perhaps the major key to the teleosts' success, and it is well worth a digression to explain it. It is an internal bladder filled with gas, which can be sensitively adjusted to keep the fish in hydrostatic equilibrium at any desired depth. If you ever played with a Cartesian Diver as a child you'll…
Breathe upon your hand, and feel how hot your breath is; well, that heat which you feel, was once in a sunbeam, and has travelled from it through the food you have eaten, and has now been at work keeping up the heat of your body.
This leads me to comment upon the opinion, held by many people, that the scientist is a completely altruistic being, devoting himself selflessly to the pursuit of truth, solely in order Jo contribute to the welfare of humanity. I do not intend it as a derogation of men whom I cherish when I say that this is, in my…