Stephanie Pappas

Structures that scatter seismic waves deep in Earth's mantle seem to be everywhere researchers look.

Structures that scatter seismic waves deep in Earth's mantle seem to be everywhere researchers look.

An internal power source could enable the development of tiny robots for applications like drug delivery and remote sensing.

Structures that scatter seismic waves deep in Earth's mantle seem to be everywhere researchers look.

Tiny robots much smaller than blood cells could deliver clot-forming drugs where they're needed most, a study in rabbits suggests. The tech has yet to be tested in humans.

The moon hasn't had a magnetic field for 4.36 billion years. That means it could hold fragments of the ancient Earth.

Volcanoes spewing carbon dioxide 250 million years ago heated the climate so much that extreme El Niño events became the norm, pushing most life on Earth past its limits.

The ancient coelacanth, which has existed for some 419 million years, never stopped evolving despite its reputation as a "living fossil." A new discovery reveals that it evolved faster when plate tectonics were most active.

The ancient coelacanth, which has existed for some 419 million years, never stopped evolving despite its reputation as a "living fossil." A new discovery reveals that it evolved faster when plate tectonics were most active.

A newly discovered doughnut shape in Earth's outer core may reveal elements that help drive the formation of the planet's magnetic field.