Word: threshold
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...swing his arms when he walks. And he has one more thing on his side: his age. Damaged central-nervous-system cells may not regrow readily, but the ones that survive a trauma can become more efficient, changing what is known as their central state of excitability--or the threshold at which even a sputtering signal can send them into action. "I don't think any scientist would dispute that a younger body is more plastic in this way," says Harkema...
...when pump prices reached $3.00 per gallon in September 2005 searches for "gas prices" surged to nearly 10 times their normal level. What is surprising is that "gas price" searches do not mirror the rise and fall of of what we pay at the pump. But once a price threshold is crossed, we become immediately -- although temporarily -- concerned...
...Fifty years ago, parenting was so much simpler for Asian men. As the sole breadwinner, a dad's responsibilities typically ceased the moment he crossed the threshold of his home and flopped into his favorite chair, while mom dealt with the dinner and the children. "The father in the previous generation was more aloof, removed from the family and emotionally more detached," says Daniel Wong, a University of Hong Kong professor of social welfare and author of a 2003 study on the stresses faced by dads. Says Benjamin Naden, a client manager at Microsoft in Singapore who sometimes snatches...
...Snow is the ability to detect recurrent tumors. Current imaging tests including MRI and PET scans may not pick up the small micrometastases that seed repeat growths; PET scans rely on the tumor's voracious appetite for glucose for energy, but until the tumor's activity reaches a certain threshold, it won't show up on the scan. So researchers are working on finding protein markers in the blood released by tumor cells that spread outside the colon; experts believe that cancer cells that venture outside the original tumor are equipped with special markers that could be detected, hopefully with...
...working with Congress could prove increasingly difficult, as the controversy escalates in an environment of mistrust. Sanchez asserted Friday: "The threshold for cooperation in Washington used to be 'Trust, but verify.' We are sending these letters today because, at this point, we'd be happy just to verify...