Sitting in the sky directly opposite the Sun, there’s a small, extremely faint spot of light. It’s not easy to see – it’s so ...

The spring equinox occurs at 10:46 a.m. Eastern Daylight Time on March 20, when the sun crosses from the southern to the northern half of the celestial sphere. This astronomical transition marks ...

In Africa, artificial intelligence and data is being used to identify pollutants and clean up the air. On the outskirts of Cairo, the pyramids shimmer in a brownish haze. In gridlocked Nairobi, ...