AnimalsJuly 20, 2022
New Evidence Emerges in Mystery of When Mammals Became Warm-Blooded
Fossil animals’ inner ear structures offer clues on when endothermy, or warm-bloodedness, evolved
Evolution
DinosaursJuly 1, 2022
Feathers May Have Helped Dinosaurs Survive Their First Apocalypse
Geologic evidence for a freezing arctic suggests dinosaurs could have weathered an epoch-ending volcanic winter
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EvolutionJuly 1, 2022
Toxic Slime Contributed to Earth’s Worst Mass Extinction—And It’s Making a Comeback
Global warming fueled rampant overgrowth of microbes at the end of the Permian period. Such lethal blooms may be on the rise again
EvolutionJune 13, 2022
Heated Debate Persists over the Origins of Complex Cells
Were mitochondria a driving evolutionary force or just a late addition?
EvolutionJune 2, 2022
Ancient Giraffe Relative Was Evolution’s Headbutting Champion, Perhaps Besting Dinosaurs
Natural selection propels the giraffe family to absolute extremes—and it is not just about the absurdly long necks
AnimalsMay 10, 2022
Two-Headed Worms Tell Us Something Fascinating about Evolution
Researchers looked back at more than 100 years of research and found that a fascination with annelids with mixed up appendages was strong—and that research still has relevance today.
EpidemiologyMay 6, 2022
A Guide to the Different Omicron Subvariants
How to tell the different versions of SARS-CoV-2 apart, and how well vaccines protect against them
PaleontologyApril 20, 2022
Pterosaurs May Have Had Brightly Colored Feathers, Exquisite Fossil Reveals
An amazingly well-preserved fossil suggests the common ancestor of dinosaurs and pterosaurs also had some type of feather or feather precursor
OpinionApril 15, 2022
Social Animals Seek Power in Surprisingly Complex Ways
It’s not just physical combat—animals have a host of strategies for building clout
AnimalsMarch 25, 2022
Lost Genes Explain Vampire Bats’ Diet of Blood
To survive on nutrient-poor blood, less can sometimes be more
EvolutionMarch 25, 2022
Urban Evolution: How Species Adapt to Survive in Cities
Evolution in cities illuminates long-standing scientific questions and climate change futures
PaleontologyMarch 15, 2022
Newly Discovered Saber-Toothed Predator Shows How Hypercarnivores Evolved
A well-preserved fossil introduces a new species that lived in what is now California around 42 million years ago