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Humans have not set foot on the moon since Apollo 17 in 1972, but those missions are still producing surprises. An analysis of a collected rock has produced the first solid evidence for graphite, the ...

The No. 2 pencil is one of the most common pencils in the world. Numbers are used to classify grades of pencils in the United States, while both numbers and letters — in what may be called the HB ...

The Graphite Pencil was discovered before 1565, when a deposit of graphite was discovered near Grey Knotts of Seathwaite in Cumbria, England. The locals being traditional farmers found that it was ...

Sept. 30 (UPI) --An artist in Taiwan was awarded a Guinness world record for an unusual piece of sculpture -- a chain of 168 links carved from pencil graphite. Lee Chien-chu originally held the record ...