Can't decide between organic mulch versus rock? Explore the pros, cons, and best uses of each to find the perfect match for ...

A weathered sign in the Minnesota River Valley proudly proclaims: “World’s Oldest Rock.” Erected in 1975, it marks a 3.8-billion-year-old gneiss — or so scientists thought.

The rocks on Earth are constantly changing due to many different processes. There are three main types of rock, with rocks changing between each type over millions of years. This rock recycling is ...

In fact, the following four rock bands ended up sounding wildly different in later works compared to their debut albums. And that’s not necessarily a bad thing. Let’s take a look, shall we?

The rover drilled four samples from different rocks along an 89-meter stretch of terrain. Researchers analyzed the rocks’ contents with Curiosity’s onboard chemistry lab. The research team ...