Word: 21st
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...this Earth now recognize that energy supplies are growing scarcer, energy demands are growing larger, and rising energy use imperils the planet we will leave to future generations. And that's why the world is now engaged in a peaceful competition to determine the technologies that will power the 21st century. From China to India, from Japan to Germany, nations everywhere are racing to develop new ways to producing and use energy. The nation that wins this competition will be the nation that leads the global economy. I am convinced of that. And I want America to be that nation...
...impact global food supplies and increase land-based carbon emissions. Melillo found that if biofuels were linked to a global policy to stabilize carbon concentrations in the atmosphere at 550 parts per million - a modest goal - we would need more land for biofuel production by the end of the 21st century than is currently used for all food crops. Worse, all the fertilizer needed to grow those bioenergy crops would increase emissions of nitrous oxide, an extremely potent greenhouse gas, and water supplies would also be stressed. "We have to think about this very carefully," says Melillo. "We need...
...America.” “It’s people who aren’t academics, who don’t necessarily see themselves as big-time readers, but who still maintain intellectual interests and want to know how to think about the world in the 21st century,” she speculates...
...this Earth now recognize that energy supplies are growing scarcer, energy demands are growing larger, and rising energy use imperils the planet we will leave to future generations. And that's why the world is now engaged in a peaceful competition to determine the technologies that will power the 21st century. From China to India, from Japan to Germany, nations everywhere are racing to develop new ways to producing and use energy. The nation that wins this competition will be the nation that leads the global economy. I am convinced of that. And I want America to be that nation...
...that have trained the majority of the 3.2 million teachers working in U.S. public schools today. "By almost any standard, many if not most of the nation's 1,450 schools, colleges and departments of education are doing a mediocre job of preparing teachers for the realities of the 21st century classroom," he said to an audience of teaching students who listened with more curiosity than ire - this was Columbia University after all, and they knew Duncan wasn't talking to them. It was a damning, but not unprecedented, assessment of teacher colleges, which have long been the stepchildren...