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A river flows between mountains at Yellowstone National Park in Wyoming. New research tests a 30-year-old theory on the relationship between erosion and mountain height. Photo credit: Seth Cottle/Unsplash

Why are mountains so high?

Subduction forced the younger oceanic crust down beneath the supercontinent Pangaea millions of years ago. Credit: University of Melbourne

Kimberlites: The only volcanic deposits that we know are from the...

Machu Pichu. Detailed mapping indicates the World Heritage Site’s location and layout were dictated by the underlying geological faults. Photo taken 5 Nov. 2010; credit: Rualdo Menegat.

Machu Picchu: Ancient Incan sanctuary intentionally built on faults

A life reconstruction of the feathered dinosaur Anchiornis huxleyi based on fossil evidence of its color and patterning. This evidence included inferences about melanin pigments. Credit: HKU MOOC / Julius T Csotonyi / Michael Pittman.

What color were fossil animals?

Artist's reconstruction of two rauisuchians fighting over a desiccated corpse of a mammal-relative in the Triassic of southern Africa. In the background, dinosaurs and mammal-like reptiles form other parts of the ecosystem. Credit: Viktor Radermacher, owns copyright

Croc-like carnivores terrorized Triassic dinosaurs in southern Africa 210 million years...

An artist’s rendition of the Tyrannosaurus rex with the 3D imaging showing muscle activation in its head. Illustration courtesy of Brian Engh.

T. rex used a stiff skull to eat its prey

Yellowstone National Park is an American national park located in Wyoming, Montana, and Idaho.

+20 Surreal Places To Visit in United States of America Before...

This image shows the divisions between Earth’s layers. The ancient, continent-sized rock regions encircle the liquid outer core. Credit: Lawrence Livermore National Laboratory

New study suggests gigantic masses in Earth’s mantle untouched for more...

A tiny sample of goldschmidtite found inside a diamond by U of A PhD student Nicole Meyer. The newly discovered mineral has high concentrations of elements seldom found in Earth’s mantle, suggesting it formed under extreme conditions. Credit: Nicole Meyer

Student discovers unusual new mineral inside a diamond

Illustration of the giant asteroid collision in outer space that produced the dust that led to an ice age on Earth. Credit: (c) Don Davis, Southwest Research Institute

Dust from a giant asteroid crash caused an ancient ice age

Photographs of alkaline magmatic intrusions in Greenland. The region was volcanically and tectonically active around 1.2 billion years ago. Although no longer active, it is of major interest to geologists because the subsequent uplift and glacial erosion have cut deep into the rift and exposed the magma chambers that once lay well below the surface. Greenland’s magmas were sourced from a mantle that was enriched and contaminated by ancient crustal materials. Credit: University of St Andrews

Ancient volcanoes reveal Earth’s recycled crust

The mineral olivine contains melt inclusions (black dots), just a few micrometers in size. The geochemists isolated these inclusions and investigated the isotopic composition with mass spectrometers. Credit: Münster University - Felix Genske

Geochemists measure new composition of Earth’s mantle

An artist's interpretation of the asteroid impact that wiped out all non-avian dinosaurs. Credit: NASA/Don Davis.

Rocks at asteroid impact site record first day of dinosaur extinction

Cryodrakon boreas. Credit David Maas

New reptile species was one of largest ever flying animals

Jurassic crocodile. Artist's impression (credit: Julia Beier)

Jurassic crocodile identified 250 years after fossil find

Origin of eukaryotes

Scientists identify rare evolutionary intermediates to understand the origin of eukaryotes

Giant extinct kangaroo

Giant Kangaroo Had Crushing Bites

Prof. Michael Coates holds a 3-D printed model of the Tristychius skull and jaws. Photo courtesy of Matt Wood

3-D reconstructions show how ancient sharks found an alternative way to...

Reconstruction of Mollisonia plenovenatrix, by Joanna Liang ©Royal Ontario Museum

Half-a-billion-year-old tiny predator unveils the rise of scorpions and spiders

The volcano Chimborazo, Ecuador, that Alexander von Humboldt surveyed in 1802. Photo: Spyros Theodoridis/CMEC

Why is Earth so biologically diverse? Mountains hold the answer

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