A new study of Earth's inner core used seismic data from repeating earthquakes, called doublets, to find that refracted waves, blue, rather than reflected waves, purple, change over time -- providing the best evidence yet that Earth's inner core is rotating. Credit: Michael Vincent

Growing mountains or shifting ground: What is going on in Earth’s...

Marsupites

Strange hollow ball-like structures found in 80-million-year-old fossils

This two-billion-year-old shungite records evidence for balmy, oxygen-rich conditions on the early Earth. Credit: K. Paiste.

Ancient rocks show high oxygen levels on Earth 2 billion years...

Francis Macdonald walks along a road near Manitou Springs, Colorado, where an exposed outcrop shows a feature known as the "Great Unconformity."

The Great Unconformity : A billion years is missing from the...

Why a big volcanic blow-up at the popular travel destimation Santorini 3200 years ago, but just a few hundred kilometers away, no drama at the volcanoes on Aegina , Methana and Poros islands? Thin sections of the lavas from these four volcanoes yield some of the reasons why. Some minerals only form at greater depths - and the hornblende in the lava from Aegina island indicates that the magma chambers there are deeper than the those underneath the Santorini caldera. But plate tectonics add another, hidden reason also, found research from the University of Johannesburg. Credit: Prof Marlina A. Elburg, University of Johannesburg

A tale of two kinds of volcanoes

Applied Geochemistry (2020). DOI: 10.1016/j.apgeochem.2020.104572

Scientists reveal mineralogical and geochemical characteristics of hydrocarbon-bleached rocks in mud...

A close-up image showing the damaged head and body of the Dorsetichthys bechei with the arms of the Clarkeiteuthis montefiorei clamped around it Credit: Malcolm Hart, Proceedings of the Geologists' Association

Fossil reveals evidence of 200-million-year-old ‘squid’ attack

Turns out, you really can’t believe everything you see in the movies. Credit: University of Wisconsin Oshkosh

Jurassic Park got it wrong: Research indicates raptors didn’t hunt in...

Published in PLOS ONE today, a study by an international team from the Perot Museum of Nature and Science in Dallas and Hokkaido University in Japan further explores the proliferation of the most commonly occurring duck-billed dinosaur of the ancient Arctic as the genus Edmontosaurus. The findings reinforce that the hadrosaurs - dubbed "caribou of the Cretaceous" - had a geographical distribution of approximately 60 degrees of latitude, spanning the North American West from Alaska to Colorado. Credit: Masato Hattori

Arctic Edmontosaurus lives again: A new look at the ‘caribou of...

Fossilized teeth from the ancient lizard Priosphenodon show that it had durable tooth enamel—a feature much more common in mammals, according to U of A paleontologists. Credit: Aaron LeBlanc

Ancient reptile had mammal-like tooth enamel, study shows

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