The United planes clipped wings as one of the planes pushed back from the gate. The incident comes amid a growing crisis at ...

South Africa’s surface is rising. Slowly, almost invisibly, some areas are lifting by as much as two millimeters each year.

For centuries, hundreds of millions of people have relied on desert wetlands that are now disappearing. Can blending ancient ...

Once aloft, these particles scatter and absorb sunlight, diminish surface irradiance, and even encourage cloud formation-all ...

Recent proposals to restructure the State Department, led by Secretary of State Marco Rubio, could be a catalyst for that ...