Hawaii

The Earth's mantle retains traces of primeval materials that are older than the moon, which formed a scant 100 million years after the solar system's coalescence.

Hawaii's ecosystems are under scientific scrutiny this month.

A new poll from Gallup-Healthways shows which states had the highest and lowest well-being in 2016.

Here's how each state ranked in a new national survey of well-being from Gallup-Healthways.

Part of a 26-acre lava delta on Hawaii's Big Island collapsed into the ocean on New Year's Eve.

Next time he's vacationing in Hawaii, President Barack Obama might just bump into his new namesake: a pink, yellow and blue coral-reef fish that researchers have named in the president's honor.

Scientists recently traveled thousands of feet below the ocean's surface to explore mysterious marine mountain environments as close as 70 miles off the Hawaiian coast.

Deep underwater off the coast of Hawaii, a mysterious, mountainous world hosts rare and unusual creatures.

Along the west coast of Oahu, just as the sun was setting on a recent evening, shifting sands revealed 400-year-old petroglyphs that had lain hidden.