Evan Saitta, the paper’s lead author, with an emperor penguin in the Field Museum’s bird collections. Photographer(s): Kate Golembiewski (c) Field Museum

When birds lose the ability to fly, their bodies change faster...

Detailed highlights of the rock sample at Biloela in Queensland.

Dozens of 3-toed dinosaurs leave their mark in Queensland

At the 12th day of incubation, feather buds exhibit longitudinal domains of cell density that correspond to the barbs of the future down feather. © Rory Cooper & Michel Milinkovitch (CC BY)

From dinosaurs to birds: the origins of feather formation

Dryolestes, a Late Jurassic relative of the Cretaceous therians. Credit: Artist James Brown, courtesy of Pamela Gill

Mammals were adapting from life in the trees to living on...

The juvenile vertebra of the pterosaur is seen in comparison to an adult-sized one. The bite occurred some 76 million years ago Credit: University of Reading

Rare pterosaur fossil reveals crocodilian bite 76m years ago

An artist’s illustration of Nyasasaurus, which could be the earliest known dinosaur, or else a close relative of early dinosaurs. Credit: Mark Witton/The Trustees of the Natural History Museum, London

New twist in mystery of dinosaurs’ origin

An artist’s rendering shows how Ahvaytum bahndooiveche may have appeared in a habitat dating to around 230 million years ago. Illustration by Gabriel Ugueto

Dinosaurs roamed the northern hemisphere millions of years earlier than previously...

The near surface of the inner core may be changing. (USC Graphic/Edward Sotelo)

Earth’s inner core is undergoing a transformation

Schematic representation of the process of subduction of tectonic plates and of a mantle plume rising from an LLSVP. In the latter, the mineral grains are larger than those in the subducted plates.

Earth’s mantle reveals hidden treasures

The underwater volcano Borealis Mud Volcano was discovered in the summer of 2023. Last year, the researchers were back at the volcano. Photo: Jørn Berger-Nyvoll / UiT

Underwater mud volcanos are a haven for marine organisms

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