Word: diagramed
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...will be left behind on Wednesday night, to orbit the moon in the command module Odyssey while Lovell and Haise make their scheduled descent in the lunar module Aquarius to land near Fra Mauro. Stopping 500 ft. or so west of their spacecraft on their first moon walk (see diagram), they will deploy a set of nuclear-powered experiments that should radio data to earth for at least a year. Their equipment will include two ingenious new devices to pry more secrets from the moon as well as the space around...
...speaking, a section of the expanding floor of the Red Sea. That floor, he says, has been uplifted by earthquakes, volcanic eruptions and other activity linked with lava flows from the Red Sea rift-whose axis has somehow been displaced slightly westward in the area of the triangle (see diagram). But the uplifting is only temporary, he writes in Scientific American. Only tens of thousands of years ago, a fleeting moment by geological standards, the Afar triangle was partially covered with seawater. As the Red Sea continues to widen and the subsurface rumbling goes on, he says, Afar will again...
Stray Tails. Therein lies the key to the elegant experiment reported last week in Nature. Once the two strains of virus had finished raiding the bacteria, the experimenters dissolved their protein sheaths, exposing their raw DNA molecules (Step 1 in diagram). Next, the scientists heated the dissimilar DNA molecules, causing each double helix to unwind and separate into one lighter and one heavier strand. Taking only the heavier strand from each virus, the researchers placed them in the same test tube, reheated them and then cooled them slowly, a process that causes two chemically complementary strands of DNA to combine...
...devoured by larger fish with yet another increase in DDT concentration (2.0 ppm). By the time the chemical had passed into the bodies of such fish-eating birds as cormorants, mergansers and ospreys its concentration (25 ppm) had increased an astounding 10 million times over the original amount (see diagram...
...neurophysiologists now see it, when a man gets a shot of penicillin in the buttock, the stab sends an impulse along the nerve fibers to the fourth lumbar vertebra (see diagram). Then the impulse travels upward and soon crosses over to the opposite side of the spinal cord for its journey toward the brain. Along the way it triggers an automatic reflex that causes the man to flinch and tighten his gluteal muscle. After the impulse reaches the thalamus, a major (and evolutionally ancient) junction box at the base of the brain, where it is perceived as pain, it proceeds...