Astronomers recently detected a stray quasi-moon in our planet’s orbit, but it's hardly the first stowaway to hang out around Earth.

The asteroids are as large as around 75 and 91 feet in diameter, according to the Center for Near Earth Object Studies.

Scientists have discovered a fern from South China that naturally forms tiny crystals containing rare earth elements (REEs). This breakthrough opens the door to a promising new way of "green mining" of these minerals called phytomining.

Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick atmosphere, which kept it warm enough to support flowing water on its surface. So, what happened to the Red Planet, and could it happen to Earth?

A lone man walks across an expanse of ice; a mottled tundra; desert badlands. The single human figure becomes a focal point as images from Earth’s diverse ecosystems change underfoot. In this visual lies a metaphor: Human footprints have made their way across the entire planet, but how have they actually shaped the land?

Today's high-tech electronics and green energy technologies would not function without rare earth elements (REEs). These 17 metals possess unique properties essential to creating items like the phosphors that illuminate our mobile phone displays and the powerful magnets used in electric vehicles and wind turbines.

To break America’s reliance on China, President Donald Trump in 2025 ordered his defence department to become a shareholder in mp Materials, a small American rare-earth miner and magnet-maker. The move secured funding from Goldman Sachs and JPMorgan,

Scientists believe it will fly by Earth on or close to Dec. 19. It'll be some 170 million miles away. "So that's going to be around twice the distance of Earth and sun, it is going to be passing the Earth on the other side.