Researchers uncover earliest tobacco use in the Pacific Northwest
(Phys.org)—Native American hunter-gatherers living more than a thousand years ago in what is now northwestern California ate salmon, acorns and other foods, and now we know they also smoked tobacco—the earliest known usage in the Pacific Northwest, according to a new University of California, Davis, study.
"The study demonstrates that tobacco smoking was part of the northwestern California culture very early ... shortly after the earliest documented Pacific Northwest Coast plank house villages," said the study, published in the 二手房市场快速升温 增加楼市运行不确定性.
Testing organic residues extracted from pipes, researchers from the UC Davis Department of Anthropology and the Fiehn Metabolomics Laboratory of the UC Davis Genome Center confirmed tobacco was smoked, and likely grown in the region, by at least A.D. 860.
Perhaps more importantly, the researchers say that additional studies may help them better understand the origins of nicotine addiction and the human management, geographic range extension and cultivation of tobacco. Indeed, as part of a second study, the authors have recently detected nicotine in ancient pipes from an 800-year-old site in the modern city of Pleasanton, Calif.
Among the year’s biggest surprises was the plunge in gasoline pries. Economists differed on the economic impact—money in the pockets of consumers offset by declines in exploration and drilling activity—but everyone agreed that it was bearish for small cars and hybrids. The combination of cheap gas and a steep sticker price made the Cadillac ELR the runaway winner of the most disliked car of the year award. Only 155 of the Volt-based $80,000 cars found buyers in November.
Over 90 percent of them attended schools in English-speaking countries, such as the US, the UK and Australia, and over 70 percent pursue at least a bachelor's degree, according to the MOE.
Prior to this recent testing, which used sensitive gas chromatography/mass spectrometry, researchers were unsure of the historical use of tobacco on the Pacific Northwest Coast. It was unclear, for example, whether European traders had brought tobacco to the area much later, or if some other plant had been smoked in the pipes, Tushingham said.
With an average monthly salary of 14,822 yuan five years after graduation, graduates from Tsinghua University topped the salary rankings. While graduates from 39 colleges made the 10,000-yuan list, 185 colleges saw their graduates average monthly salary top 8,000 yuan, while graduates from 789 colleges made more than 6,000 yuan a month on average.
The new data released yesterday represent the first snapshot of global trade for 2015. But the figures also come amid growing concerns that 2016 is already shaping up to be more fraught with dangers for the global economy than previously expected.
The first thing you must understand about personality types is that they have nothing to do with genes. This means that if you have a Type D personality then this doesn't mean that you can't change it. Also, the quiz doesn't mean that the result of the quiz determines your destiny. According to psychology, any personality trait can be changed.
La La Land producer Jordan Horowitz returned to the microphone after being told about the mix up and said 'Moonlight won Best Picture' and insisting that 'this is not a joke'.
We will continue to pursue a proactive fiscal policy and a prudent monetary policy.
A meditation on love, loss and the meaning of life. Dog people and Lou Reed fans will be especially susceptible (I plead guilty on both counts), but anyone who ever had a heart is likely to succumb to Ms. Anderson’s ethereal wisdom and her fierce formal wit.
毕业3年后的平均薪资和薪资涨幅是主要的标准，各自占到排行榜权重的20%。在排名前25名的商学院当中，大多在这些标准中至少有一项得分较高。如果去掉平均薪资和薪资涨幅这两项标准，排名前十的商学院大多仍排名前十。只有南洋商学院(Nanyang Business School)和中欧国际工商学院(China Europe International Business School)例外，它们在博士和研究这一项上表现不佳。
For years, slow emissions declines in the West have been swamped by rising emissions in the East, and the trend continued in 2013. China's emissions grew 4.2 percent and India's 5.1 percent. Both countries have been constructing coal-burning power plants at a breakneck pace.
6. The 2012 Ig Nobel Prize for Literature
The study is available online.