Eggs laid by dinosaurs have provided paleontologists with a new way to tell prehistoric time. By looking to radioactive ...

Sprawled across much of the Arabian Peninsula, today’s Arabian Desert is known for brutal heat, dry, harsh winds and scarce water—hardly hospitable to human settlers unaided by air conditioning and a ...

Test your rock & mineral smarts—are you a Rock Star? Think you know rocks and minerals? Take the Science Trek quiz! Test your smarts on gold, salt, Earth’s oldest rocks, gemstones on Mars, and the ...