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Lesson Six Text A Diamonds Diamonds are rare, beautiful, and also quite useful. They are the hardest substance found in nature. That means a diamond can cut any other surface. And only another diamond
By Greg Flakus Scientists in Texas are trying to find a way of reducing carbon dioxide air pollution by capturing the gas, compressing it and then putting it underground. This technique could also yie
A woman answered her front door and found two boys holding a list.
A woman answered her front door and found two boys holding a list. Lady, one of them explained, we are on a treasure hunt, and we need three grains of wheat, a pork-chop bone and a piece of used carbon paper to earn a dollar. Wow, the woman replied,
HARBIN, Jan. 31 (Xinhua) -- Carbon monoxide has been blamed for the Tuesday deaths of 12 workers in a coal mine in northeast China's Heilongjiang Province, a local official said Thursday. Three workers entered the Yongsheng mine in Dongning County to
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