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...balance between two variables: the calories a body takes in and the calories it burns off. As far as the average U.S. teen is concerned, the study suggests, the culprit behind weight gain is not a decrease in exercise but an increase in consumption. Of course, that doesn't mean teens are getting adequate exercise: Wang analyzed data from nearly 16,000 high school students between the ages of 15 and 18, who took part in the Centers for Disease Control and Prevention's longitudinal Youth Risk Behavior Surveillance Survey, about their physical activity. He and his team found that...
...does this mean that exercise isn't important in controlling weight? As tempting as that conclusion might be, Wang and other health experts say that's not exactly what the new data show. The findings may say less about the role of exercise by itself than about the other variable in the weight equation - diet - and the interaction of the two. While exercise may not contribute directly to weight loss, it is critical for maintaining a healthy weight, since it helps calibrate the balance between energy taken in and energy burned off. "The data is too gross, and too general...
...Thankfully, in the face of mounting bad news on the budget front, Hatoyama is not stubbornly clinging to pledges of fiscal austerity. Major spending cuts have been rendered unrealistic by the current economic climate. Falling real wages and low business investment mean Japan's recovery is fragile. A recent Nikkei newspaper survey showed that 38% of top Japanese executives rated the likelihood of another downturn next year as high or somewhat high. The biggest risk, cited by 69% of respondents, was "the effect of fiscal stimulus measures wearing off." Hatoyama appears to be willing to continue stimulus spending under...
...1960s were by most measures the best decade ever for growth and widening prosperity in the U.S.; the past decade has been a bust. Yet the financial sector was relatively tiny in the 1960s and huge in the 2000s. Could this mean that good times for finance are bad for the rest of us? Philippon says it isn't that simple. The 1990s, for example, were good for both Wall Street and Main Street. His theory, which fits the historical evidence well, is that the financial sector's share of the economy should increase when there are fast-growing companies...
Iran has thus far proved to be one of the most significant tests of President Barack Obama's national-security leadership. And the stakes are high: failure could mean an Iranian nuclear weapon and a Middle East arms race on the one hand, and military action by the U.S. or Israel that could inflame the region and create an Islamic backlash against the U.S. on the other. The key question is what price the President is willing to pay to avoid such outcomes...