The cleanest cities in the world are Copenhagen, Singapore, and Calgary. These cities are known for their cleanliness and ...

Clean air has become one of America’s best investments, returning $10 for every $1 spent on regulations, by one estimate.

Russian troops fighting in Kursk have reached the Ukraine border area, Moscow claimed on Friday. The Kremlin’s defence ...

When Baltimore's Francis Scott Key Bridge collapsed, many thought the massive cleanup effort would take six months or more.