cookies to track usage and preferences."
data-cookieaccepttext="I UNDERSTAND"
data-cookiedeclinetext="Disable Cookies"
data-cookiepolicytext="Privacy Policy">
VIDEO: How old is the Grand Canyon? Will the Colorado River run dry? Learn about how the Big Ditch formed and the present state and uncertain future of the Colorado River watershed.
OPINION: Volcanologists warn that magma-filled vents evolve over time, leading to an underestimation of the number that might erupt — especially those capable of the biggest explosions
Decades of exploring the seafloor have helped oceanographer Samantha Joye tackle marine issues — from the underwater movement of oil from Deepwater Horizon to the biology of remote microbial communities
Ancient rocks suggest that ice entirely covered our planet on at least two occasions. This theory may help explain the rise of complex life that followed.
Crystals of the mineral zircon are rugged enough to survive the most violent geologic events. Impurities within them provide a time capsule of planetary history.
Along 1,100 kilometers, from Mexico to Costa Rica, lies the Central American volcanic arc, where the variety of magma types make for a geological paradise
The South American country, where the biodiversity of the Andes meets that of the Amazon, is losing the great natural wealth of some 1,500 square kilometers of forest each year, mainly in areas formerly under guerrilla control
The wet landmasses, though inherently impermanent, have been essential to both people and wildlife for thousands of years. But recent shifts have brought on some rapid losses that worry scientists.
With many collisions and much crumpling of rock, down the ages. The story holds lessons for how the edges of continents are built and change over time.
Researchers have long believed that a sudden, massive deluge filled a dry, salt-filled Mediterranean some 5 million years ago. Turns out that probably didn't happen, but there was still drama aplenty.
After 100 years as a national park and eons as a geological wonder, the American icon continues to reveal layers of its past and of the landscape ahead
Renewable technologies need a multitude of critical minerals. The seabed could supply these riches. But at what cost?
Close X
This is not a paywall.
Knowable Magazine is free to read. But just because our articles are free to read doesn’t mean they are free to produce. If you value our trustworthy science journalism, please support it with a donation.
