Tiny New Species of Herbivorous Dinosaur Unearthed in Spain
A new genus and species of diminutive bipedal dinosaur has been identified from the fossils found in Burgos…
Ancient giant kangaroos could have hopped despite their huge size
Procoptodon goliah was 2 metres tall, but it might have hopped MICHAEL LONG/SCIENCE PHOTO LIBRARY Even the giant…
Biomechanical limits of hopping in the hindlimbs of giant extinct kangaroos
Specimens All species included in this study were macropodiforms; the bone measurement dataset encompassed all extant families and…
Southern hemisphere ceratosaurs evolved feeding mechanics paralleling those of Northern hemisphere tyrannosaurids
Carrano, M. T. & Sampson, S. D. The phylogeny of ceratosauria (Dinosauria: Theropoda). J. Syst. Paleontol. 6, 183–236…
We Evolved Something Else Instead
Humans are the only primates that run nearly naked under the sun. Here’s how this biological tradeoff reshaped…
Jellyfish sleep like humans — even though they don’t have brains
The upside-down jellyfish Cassiopea andromeda sleeps for roughly 8 hours a day.Credit: Shahar Shabtai/Alamy Neither jellyfish nor sea…
How Fearsome Wolves Became Loyal Dogs — and Changed Human History Forever
The dog diverged from a now-extinct population of wolves 27,000–40,000 years ago, before or during the Last Glacial…
How do genetic association studies rank genes?
RESEARCH BRIEFINGS 19 November 2025 Genome-wide association studies and rare-variant burden tests are the two main tools for…
Apes Were Kissing Millions of Years Before Humans, Study Suggests
While kissing might feel like one of the most natural things in the world, this familiar behavior is…
How Our Human Lineage Broke All the Rules of Vertebrate Evolution
A cast of the skull of Homo floresiensis, one of the hominin species analyzed in the latest study.…