NASA satellite offers urban carbon dioxide insights

A new NASA/university study of carbon dioxide emissions for 20 major cities around the world provides the first direct, satellite-based evidence that as a city's population density increases, the carbon dioxide it emits per ...

Cities affect temperatures for thousands of miles

Even if you live more than 1,000 miles from the nearest large city, it could be affecting your weather. In a new study that shows the extent to which human activities are influencing the atmosphere, scientists have concluded ...

Look up! A powerful owl could be sleeping in your backyard

Picture this: you're in your backyard gardening when you get that strange, ominous feeling of being watched. You find a gray oval-shaped ball about the size of a thumb, filled with bones and fur—a pellet, or "owl vomit."

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