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San Bernardino Police Chief Jarrod Burguan said the shooting at Northpark Elementary School in San Bernardino, east of Los Angeles, appeared to a "murder-suicide" and that two wounded students had been taken to the hospital for treatment.
Sandy was the first official from the Office of Management and Budget to defy Trump’s instructions not to testify. Like others, he received a subpoena to appear.
Scientists have set an ambitious target for China's Tianhe-3 supercomputer to meet by 2020, the goal of making a quintillion calculations per second.
Sarah Alexander, the vice-president of USGBC, says that China is now the second country after the United States in LEED usage, with more than 3,300 projects, which cover more than 161 million square meters.
Sales of various types of second-hand vehicles dropped slightly in April on a monthly basis, but posted increases from a year earlier, the association said.
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Safety, nutrition, taste, sustainability and affordability are basic requirements for Nestle to develop research of each new products, he said. But on top of that, "it is about addressing the trends in China" and get consumers excited about their products, he said, "given the young consumers want varieties, new things each week".
Scientists around the world have been trying to maximize the potential of microalgae for years. In June, scientists in the United States made a mutant strain of microalgae that can grow as fast as its wild variant but produce more than double the oil, according to Nature Biotechnology, an international science journal.
School boycott will impede school operations and deprive students of a normal study life, and cause emotional problems for students, Yeung said.
SXSW Interactive has become an incubator for new ideas and technologies. Speakers, meet-ups and start-up accelerators attract big corporations, inventors, entrepreneurs and investors from around the world.