Evolution

A new study indicates that Neanderthals and early Homo sapiens interbred over a broad area spanning most of Europe, the eastern Mediterranean, and western Asia. Researchers analyzed ancient genetic samples to map this hybrid zone, challenging earlier assumptions of a more localized interaction. The findings suggest repeated encounters as humans expanded from Africa.

February 02, 2026 由 AI 报道

A new study reveals that young sauropods, despite their parents' massive size, were vulnerable prey that sustained Late Jurassic predators. Researchers from UCL analyzed fossils from Colorado's Dry Mesa Quarry to reconstruct the era's food web. This abundance of easy meals may explain why predators like Allosaurus thrived without advanced hunting traits.

A new study on cephalopods suggests that large brains may evolve due to environmental factors rather than social interactions. Researchers analyzed brain sizes across 79 species and found links to habitat complexity, not sociality. This prompts a rethink of why animals like octopuses develop complex nervous systems.

January 21, 2026 由 AI 报道

Extraordinary fossils of 518-million-year-old jawless fish suggest that the world's earliest known vertebrates possessed two pairs of eyes. Discovered in south-west China, these ancient creatures from the Cambrian period challenge our understanding of early animal vision. Researchers propose that this extra set of eyes evolved into modern organs like the pineal gland.