(DC News Now) — While people marked Earth Day on Monday, the Virginia Department of Transportation (VDOT) took the opportunity to encourage people to keep the state’s highways clean.

What better way to celebrate the Earth than by keeping it clean? This Earth Day, the Pocono Mountains Visitors Bureau (PMVB) is once again calling on volunteers to participate in its annual Pick ...

Those who do take action to remove litter say they do it because they care about keeping their communities clean and reducing ... Between now and Earth Day (April 22), Keep America Beautiful ...

Ideas for filtering solar radiation to keep Earth from overheating have been kicking around for decades, ranging from giant space-based screens to churning out reflective white clouds. But the ...