A freshwater ecologist explains why the mountain is less a postcard and more a slow-leaking, bug-monitored water machine.

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Missouri isn’t exactly known for looking like the surface of an alien planet, but apparently nobody told Meramec Caverns in Sullivan about that. This underground wonderland looks like something a ...

The Oregon Caves National Monument & Preserve in Cave Junction is proof that sometimes the most extraordinary landscapes are ...

Some insects look more like aliens than they do insects. One example is a grasshopper that is able to survive by not looking ...

When we imagine alien life we often picture something radically different from ourselves. But evolution tends to solve similar problems in similar ways, and intelligence may come with predictable ...

On Thursday the U.S. president ordered the release of federal files related to UFOs and aliens, although no evidence of extraterrestrials visiting Earth is known to exist ...

More than 2,500 alien plant species could find suitable conditions in the Arctic, especially in northern Norway and Svalbard.

The planet is becoming greener, but scientists warn that forests with fast-growing trees are more fragile and less resilient.

Scientists have observed "coronae" on treetops for the first time, confirming the phenomenon occurs in the wild.