• 三手烟:有毒污染物能在空气中持续数日

    14-11-05 Ever walked into a hotel room and smelled old cigarette smoke? While the last smoker may have left the room hours or even days ago, the lingering odors -- resulting from noxious residue that clings to walls, carpets, furniture, or dust particles --...

  • 从地球和太空中监测泥炭地

    10-01-26 A team of UK scientists led by Dr. Karen Anderson (University of Exeter) has developed a new technique for monitoring the condition of peatlands泥炭地 . The team used a combination of images captured from Earth and space to measure spatial patternin...

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