摘要
Roughly 125,000 years ago, pdmitive human beings radically altered the course of history and made their first step to-ward cMlization by taming fire. Jumping forward to about 3,000 years ago, Chinese people were among the first to have found and used coal in cooking. heating and metallurgy.
New technology could improve efficiency of fossil fuelRoughly 125,000 years ago,primitive human beings radically altered the course of history and made their first step toward civilization by taming fire. Jumping forward to about 3,000 years ago,Chinese people were among the first to have found and used coal in cooking,heating and metallurgy.Then in 1925,two German scientists—
