geology The ocean's salt could blanket the Earth's land surface in a whopping 500-foot layer Mark Frauenfelder

Science There's a gravity hole in the Indian Ocean and scientists found the cause David Pescovitz

geology Book about the "bad luck" incurred taking souvenir rocks from National Parks Bob Knetzger

Dizzy The earth's core may have reversed direction. Elías Villoro

biology These organisms are 830 million-years-old and may still be alive David Pescovitz

Space Look at this tiny delicate "flower" photographed on surface of Mars David Pescovitz

geology Incredible satellite video of volcanic eruption on Tongan island Mark Frauenfelder

mysteries Video finally reveals what's at the bottom of Yemen's Well of Hell David Pescovitz

geology Ruin marble is a kind of rock with patterns that look like derelict cities Mark Frauenfelder

weather What's with those creepy weird blue lights accompanying the Mexico earthquake? David Pescovitz

geology Mount Taranaki, a "circle visible from space" Rob Beschizza

geology What lies at the bottom of Yemen's mysterious Well of Hell? David Pescovitz

Science How scientists actually collect magma samples in a bucket Thom Dunn

climate change Mysterious crater appears in Siberian tundra Rob Beschizza

Science Amazing interactive globe shows the very different location of your city 750 million years ago David Pescovitz

History Stonehenge core sample shows monument was largely quarried only 15 miles from site Rob Beschizza

Science Gloriously colorful new geologic map of the moon David Pescovitz

Science The scientific secrets inside a single grain of moon dust David Pescovitz

geology Behold the glowing Yooperlite rocks of Lake Superior Rob Beschizza