Originally posted by Scientific American. The procurement arm of the federal government is imposing new limitations on high carbon-emitting building materials for all its major projects, a move that will affect billions of dollars of federal infrastructure investments.

The industrial sector is a major source of greenhouse gas emissions. Concrete, steel and aluminum account for 23 percent of total global emissions. And asphalt—which traps and emits heat—exacerbates rising temperatures, particularly in urban areas.

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