Select an option below to continue reading this premium story. Already a Honolulu Star-Advertiser subscriber? Log in now to continue reading. The Snowball Earth hypothesis is still debated among ...

This year marks the 55th anniversary of Earth Day! Every year on April 22, people worldwide mobilize to address some of the most urgent threats facing our environment, from climate change to ...

Discover the hidden wonders of Earth's mysteries in '25 Hidden Secrets of Earth,' as we unveil fascinating geological formations, hidden ecosystems, and astonishing wildlife adaptations WATCH OUR ...

Explore mind-bending revelations in "25 Astonishing Facts About The Earth That Will Confuse You." Unveil secrets from ...

Ah, Earth. We may not think about our planet on a day-to-day basis, but the world we live in is a pretty interesting place. The third rock from the Sun—and to this day, the only one with known ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. In the 1931 movie ...

The inner core was discovered in 1936, and its size (about 20% of Earth's radius) is one of the best-constrained properties of the deep Earth. We use this information to estimate the core's ...

The moon hasn't had a magnetic field for 4.36 billion years. That means it could hold fragments of the ancient Earth. When you purchase through links on our site, we may earn an affiliate commission.

A farmer sits on a dried rice field damaged by drought in Vietnam's southern Ben Tre province on March 19, 2024. Editor at Large Of the eight planets and 293 moons that call our solar system home, ...