New results from a national exam find that America’s children have continued to lose ground on reading skills in the wake of ...

At perihelion, Earth will be approximately 147 million kilometres from the Sun. The Sun will appear slightly larger in the sky, but the change is almost imperceptible. This year, perihelion will ...

It prompted the first Earth Day, led to the creation of the U.S. Environmental Protection Agency and helped spawn bedrock laws such as the Clean Air Act and the Endangered Species Act. The ...