A large genetic study of nearly 700,000 people has identified 74 genome regions linked to anxiety, including 39 new associations. Published in Nature Human Behaviour, the research offers the most detailed genetic map of anxiety to date, revealing small genetic variations and overlaps with physical illnesses, and paving the way for future treatment research.
A new genetic study reveals the endangered British swallowtail butterfly (Papilio machaon britannicus) is a distinct subspecies with origins dating back 200,000 years, challenging previous theories and highlighting the need for renewed conservation efforts against habitat loss due to climate change.
A study published in Nature reveals that some Indigenous South American populations carry genetic ancestry remarkably similar to Indigenous populations in Australia and Pacific Islands. Researchers concluded this ancestry did not come from the Americas' earliest settlers, pointing to an ancient "ghost population" that contributed genes to Amazonian groups. The findings challenge the decades-old theory that the Americas were populated through two major migration waves beginning roughly 15,000 years ago via the Bering Strait land bridge.
