The Preuss School UCSD—a charter middle and high school for motivated, low-income students who strive to become the first in their families to graduate from college—has been ranked the best high school in San Diego County by U.S. News & World Report, which released its annual list of “Best High Schools” today
For the first time in human history, concentrations of the greenhouse gas carbon dioxide (CO2 ) could rise above 400 parts per million (ppm) for sustained lengths of time throughout much of the Northern Hemisphere as soon as May 2013.
For much of Asia, the pace of life is tuned to rhythms of monsoons. The summer rainy season is especially important for securing the water and food supplies for more than a billion people. Its variations can mean the difference between drought and flood.