Salvias are landscape staples for a reason—their nectar-rich flowers attract pollinators, they blossom for a long time, are ...

As they span significant areas of Asia, Europe and the Americas, karst landscapes cover some 15 percent of the Earth ... Infographics by Hannah Nester for Circle of Blue. See the full-size World Karst ...

Firefly's lunar lander Blue Ghost entered orbit around the moon last week, ending a four-day transit from Earth. And now that it's flying at a lower altitude, the lander is sending back some ...