Sorry, you can't go visit the world's tallest waterfall. There's no overlook, there will be no oooh-ing and ahhh-ing over the rainbows in the …
Underwater Icicles Are Salty, Weird-Looking and Deadly
These underwater icicles may look cool, but they can kill some sea life. And that's not cool. Read other fascinating oceanography stories as dive deep to find out what causes these deadly icicles.

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The past century hasn't been kind to coral reefs. These delicate, complex, important ecosystems have been hit hard by environmental changes like …
You're probably not ever going to go diving in the waters off Antarctica, or in the Arctic near the North Pole. But if you ever do, there's a chance …
A parked truck with the engine running. That's the sound some people have compared to the mysterious, non-stop noise which is emanating from our home …
A few billion years ago, much of this planet was totally uninhabitable by today's standards. The sweet, hospitable green Earth we know and love used …