Word: questioned
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There are plenty of caveats attached: without other nutrients, the size and health of CO2-enriched plants can be compromised, and in some cases noxious weeds like poison ivy do better than the greenery you might prefer. But perhaps the biggest question of all is how closely such artificial situations translate in the real world. (Watch "Battle of the Endangered Species: Bats v. Trees...
...That question is a long way from being answered, but a study published recently in the Proceedings of the National Academy of Sciences takes a small step in that direction. A team of researchers used 22 years' worth of carefully accumulated measurements of hardwood forests in and near the Smithsonian Environmental Research Center, in Edgewater, Md., to show that their growth has accelerated significantly. On average, the stands were expanding at a rate of two extra tons of mass per acre per year, by the end of the study - the equivalent of a single two-foot-diameter tree...
Most importantly, Aristotle’s notion of school as leisure should remind us that a thesis need not be required in order for us to study what we want. If students’ education, as the FDO rightly notes, ought to answer the question, “What do you want to learn?” then the College should establish concentration policies that give primacy to our answers to this question—not to a thesis or the interrelatedness of the multiple answers we might well give...
...inspired fresh rounds of criticism from national security hawks. "Why wasn't his group brought in once this terrorist was taken into custody?" McConnell declared on the Senate floor. Former CIA Director Michael Hayden wrote in an op-ed last Sunday that while the Administration was still unprepared to question terrorists, interrogations of CIA personnel over Bush-era abuses are "well underway." William Burck, a former deputy counsel to President Bush, says the idea of the HIG is "fabulous" - but it needs to be implemented. The fact that it hasn't been a year after the Obama Administration scrapped...
...Iranians will see the final season of Lost through to the end. "People are very excited about Season 6. They have waited long enough for it," says Ghazaleh. The executive producers of Lost have already promised viewers that not every single mystery will be answered. It remains an open question whether the various plot points of Lost will be resolved before the current political situation in Iran...