The oldest DNA yet isolated from humans in Africa reveals long-range migrations around 50,000 years ago, which likely played a role in the Middle to Later Stone Age transition.
The pandemic and accompanying lockdowns have meant missing growing seasons and losing out on key data. As restrictions are partially lifted, researchers are adjusting to the new normal.
The company had helped develop a tool to aid decision-making in distributing limited medical equipment among coronavirus patients, but two high-profile retractions call into question the validity of Surgisphere’s work in toto.
A six-year study across the Tanzanian mountain’s slopes hints at how land-use practices will interact with a changing climate to influence ecosystems around the world.