In Arizona, nature is diverse and dramatic. The state's Tonto Natural Bridge State Park is home to the world's largest natural travertine bridge, where visitors can hike and explore its unparalleled ...

Picture all of Earth’s oceans, which cover about 70% of the planet and are mostly made of hydrogen. Now multiply that by nine. That may be the amount of hydrogen in Earth’s core, possibly making it ...

“Microlightning” exchanges among water droplets could have sparked the building blocks of life on ancient Earth, new research finds. Here, a wave breaks on White Sand Beach on the Thai island of Koh ...

A giant impact on the early Earth could have brought the building blocks of RNA to our planet, which new research suggests could have quickly formed in the presence of compounds called borates. When ...

April brings us Citizen Science Month and Earth Day—that means it’s the perfect time to get outside, explore nature, and even help real scientists with their research! You don’t need to be an expert, ...

The Earth Dynamics Geodetic Explorer (EDGE) is one of two missions NASA selected Feb. 5 for its Earth System Explorer program. Credit: Lanteris Space Systems WASHINGTON — NASA has selected two Earth ...

Earth’s core may contain up to 45 oceans’ worth of hydrogen, a new study finds—an estimate that suggests that the planet formed from a gas-and-dust disk that was rich in the universe’s lightest ...

CARBONDALE — This year’s observance of Earth Science Week at Southern Illinois University Carbondale will focus on meeting energy needs in a sustainable way on campus, in the region and beyond, along ...

Scientists used a new technique to estimate the abundance of hydrogen in Earth’s core. - Tumeggy/Science Photo Library RF/Getty Images Picture all of Earth’s oceans, which cover about 70% of the ...