Additional pockets of high carbon monoxide concentrations southeast of Hudson Bay may have been transported to the area from the Northwest Territories, but they may also be from local fires.

另外一些高一氧化碳含量区位于哈德孙湾东南方向，可能是由于西北地区的烟尘传播到该地区，但也有可能是当地火灾所造成的。

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This image from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter covers a small portion of the northwest quadrant of Hellas Planitia on Mars.

这幅由NASA的火星轨道探测器上的高解析度成像科学实验照相机（HiRISE）拍摄的图像涵盖了火星上希腊平原西北四分之一的一小部分。

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Air pollution in Beijing reached a high level of 99 on the Air pollution Index on Friday as a sandstorm from the northwest shrouded the capital in dust, the China News Service reported.

据中国新闻社报道，北京市区13日遭遇了来自西北方的沙尘袭击，当天该市污染指数一度达到99。

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With gas prices so high, the oil industry sees profits on the high plains of northwest Colorado, or more specifically in the rock that lies beneath them.

NPR: Industry Seeks to Extract Oil from Rocky Mountain Shale

Forest fires burning in Canada's Northwest Territories in 1995 contributed to high levels of carbon monoxide more than 2, 000 miles away in the eastern United States, according to a study in today's issue of Science.

CNN: Canadian forest fires add to U.S. pollution

Thanks to a story that appeared Jan. 26 in The Times of Northwest Indiana, I know now high schools in that state are worried about recruitment of athletes who have just reached double-digits not in basketball scoring average, but in age.

FORBES: Indiana Warns 10-Year-Olds: Being Recruited Now Means No High School Sports Later