• 撒哈拉的沙尘使利比里亚半岛的气温降低

    15-04-30 Spanish and Portuguese researchers have analysed the composition and radiative effect of desert aerosols during two episodes which simultaneously affected Badajoz (Spain) and vora (Portugal) in August 2012. Results show that the intrusion of dust fr...

  • 通过真菌DNA可追踪灰尘样本

    15-04-16 Researchers from North Carolina State University and the University of Colorado, Boulder, have developed a statistical model that allows them to tell where a dust sample came from within the continental United States based on the DNA of fungi found...

  • 天文学家在早期宇宙中发现尘埃

    15-03-03 Dust plays an extremely important role in the universe -- both in the formation of planets and new stars. But dust was not there from the beginning and the earliest galaxies had no dust, only gas. Now an international team of astronomers, led by res...

  • 撒哈拉沙尘与亚马逊雨林

    15-02-25 The Sahara Desert and the Amazon rainforest seem to inhabit separate worlds. The former is a vast expanse of sand and scrub stretching across the northern third of Africa, while the latter is a dense green mass of humid jungle covering northeast Sou...

  • 植被可防止水土流失

    15-01-22 Dust from soil erosion due to wind can affect human health, traffic, and, on a larger scale, climate. Investigators compared different models that quantify how the wind energy spreads over an herbaceous surface using data from the Sahel region of Af...

  • 撒哈拉沙尘对形成巴哈马群岛起主要作用

    14-07-26 A new study suggests that Saharan dust played a major role in the formation of the Bahamas islands. Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science showed that iron-rich Saharan dust provides the nut...

  • 超新星是星际尘埃的主要来源

    14-01-08 Galaxies can be remarkably dusty places and supernovas are thought to be a primary source of that dust, especially in the early Universe. Direct evidence of a supernova's dust-making capabilities, however, has been slim and cannot account for the co...

  • 撒哈拉沙尘的移动之谜

    13-08-24 Satellite pictures of Saharan dust clouds have been in the news all summer, but to Shankar Chellam, they have just raised more questions. How much impact did the Saharan dust have on Houston's air? Is it more toxic than our home-grown dust? Chellam,...

  • 巧译“灰色”

    13-03-05 如今灰字成了现代词汇的一个重要词素。如国家纪检部门(discipline inspection department)三番五次大力清理的所谓灰色收入(grey income);金融界有灰色市场(grey market)。灰色的经济和活动等不同于黑色手段,往往不违反法律或打擦边球、钻法律的空子(exploit l...

  • 与其诅咒黑暗 不如燃起蜡烛

    13-01-15 Better to light one candle than to curse the darkness. (Strong) 与其诅咒黑暗,不如燃起蜡烛。(斯特郎) A man can fail many times, but he isn't a failure until he begins to blame somebody else. (J. Burroughs) 一个人可以失败许多次,但是只要他没有开始...