Word: pushes
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Dates: during 1990-1999
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Scientists are also beginning to identify some of the genes that guide neurons in their long migrations. Consider the problem faced by neurons destined to become part of the cerebral cortex. Because they arise relatively late in the development of the mammalian brain, billions of these cells must push and shove their way through dense colonies established by earlier migrants. "It's as if the entire population of the East Coast decided to move en masse to the West Coast," marvels Yale University neuroscientist Dr. Pasko Rakic, and marched through Cleveland, Chicago and Denver to get there...
...submarine or airplane scan the environment for signals, so molecules arrayed on the surface of growth cones search their surroundings for the presence of certain proteins. Some of these proteins, it turns out, are attractants that pull the growth cones toward them, while others are repellents that push them away...
...younger lives in "extreme poverty"--at or below 50% of the federal poverty level. And the well-being of many others is threatened by such social changes as the rise of single-parent households, the uneven quality of day care, the decline of communities and, some would argue, the push to reform the welfare system...
...push more children into this system through welfare reform," says Ellen Galinsky, co-president of the Families and Work Institute, "and you are saying to these families, 'Just get any child care you can find and can pay for,' there's a real danger...
...performances are also big; nearly everyone in this Act-O-Rama gets a screaming scene. The tone is set by Roth, the Brit of choice for those directors who think Gary Oldman just doesn't push it far enough. It's cartoon work, really (imagine Henery Hawk trying to be the Tasmanian Devil), but fun to watch. And Shakur, as the sensible guy, plays nicely off Roth. He is both Stretch's keeper and the film's conscience. "When gettin' high becomes a job," he muses, "what's the point...