The blue path illustrates a core-penetrating seismic wave moving through a region in the outer core, where the seismic speed has increased because a low-density flow has moved into the region. Credit: Ying Zhou

Seismic waves from earthquakes reveal changes in the Earth’s outer core

Representative Image: Plesiosaur attack, artwork.

How plesiosaurs swam underwater

Genyornis eggshell recently exposed by wind erosion of sand dune in which it was buried, South Australia. Credit: Gifford Miller

First Australians ate giant eggs of huge flightless birds, ancient proteins...

Tooth size comparison between extinct Early Pliocene Otodus megalodon tooth and a modern great white shark. © MPI for Evolutionary Anthropology

Great white sharks may have contributed to megalodon extinction

Earth

Earth’s core: Unexpected flow behavior in liquid metals

Middle: Microscopic plankton cell-wall coverings preserved as “ghost” fossil impressions, pressed into the surface of ancient organic matter (183 million years old). Th

Scientists have discovered a new type of fossilization

Molten lava from a Hawaiian volcano. Image: Willyam/Adobe

Puzzling features deep in Earth’s interior illuminated

Puna Plateau (© Mitchall d'Arcy)

Which forces control the elevation of mountains?

volcanoes

Arc volcanoes are wetter than previously thought, with scientific and economic...

Examples of radiolarians, a type of microplankton. These tiny lifeforms need normal salinity seawater with plenty of nutrients including silica to grow and maintain their glassy shells. Researchers at the University of Texas Institute for Geophysics found fossilized radiolarians in geologic samples dating back 56 million years, proving that life persisted in the Gulf of Mexico despite global warming that left many oceans barren. Credit: U.S. Geological Survey

Research shows how Gulf of Mexico escaped ancient mass extinction

1...313233...666Page 32 of 666