Like some other metals, copper oxidizes when left out in the elements, but the coloring process is complicated.
More than 70% of our little blue planet is covered by water, but we can only drink a tiny fraction of it. Why can't we drink saltwater when it is all around us?
There are a myriad of answers to the question, "why are manhole covers round?" But most of them have to do with functionality and economy.
A sprawling new sonar map of Antarctica's Southern Ocean includes the ocean's new deepest point, the 'Factorian Deep,' for the first time.
Researchers in Antarctica have discovered a hidden ecosystem more than 1,600 feet below the ice, which is filled with shrimplike creatures.
Using a new computer model to determine the age of the tree, it was found that the Gran Abuelo could be roughly 5,400 years old.
The Red Sea takes its name from periodic blooms of a blue-green algae called Trichodesmium erythraeum, which turn the normally vivid blue waters a reddish-brown.
This guide to the Atlantic hurricane season of 2022, includes predictions, tropical storm science, naming conventions and storm safety tips.
The Siberian tundra will shrink even with ambitious greenhouse gas reductions. Without them, it could disappear altogether.
Millions of tons of a type of extremely reactive chemical can form in the atmosphere each year, with implications for health and the global climate.
Researchers have discovered that 4,500-year-old seagrass meadows in Shark Bay, Western Australia, are actually the world's largest clone.
Whether you call our planet the Earth, the world or a terrestrial body, all of these names have an origin story deep in history.
A terrifying climate change prophecy appears to be upon us, with bomb-like cyclones and searing droughts. But is the weather actually getting worse?
People in New York can catch the gorgeous "Manhattanhenge" this Memorial Day weekend on May 29 and 30.
Due to a number of technical and logistical difficulties, as well as meandering through sparsely populated areas, there is no pressing need to build a bridge on the Amazon River.