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The discovery of ancient cities in Asia and the Americas point to earlier bouts of social and climatic upheavals. The good news is that humanity survived, says Annalee Newitz

AI made incredible progress in 2023, but with a less-impressive pace of development this year, it may be that existing techniques are reaching their limits

Our Future Chronicles column explores an imagined history of inventions and developments yet to come. This time we fast forward to the 2050s, when people gain the ability to hibernate and use it for far more than escaping the winter blues

Red lights continued to flash on the climate dashboard as many aspects of the natural world declined in 2024, although there were a few green shoots of hope to cling to, says Graham Lawton

Events across the globe have conspired to create a sense of chaos, but many fields of research can help us make sense of the world, says Chanda Prescod-Weinstein

Feedback, feeling somewhat Grinch-like, digs into the knotty history of NORAD Tracks Santa, in which the North American Aerospace Defense Command shows its cuddly side

2024 was another year of record-breaking heat and extreme weather, including devastating floods, storms and wildfires across the globe

Solving challenges like climate change not only requires ambitious targets, but also an honest appraisal of uncertainty and possible failure

They were loved by Charles Darwin, they build brilliantly bad nests and they even produce a kind of “milk”. Surely, these facts are more than enough to foster a love for the urban pigeon

Rather than getting its water from impacts, our planet may have drawn in water vapour after the sun boiled it off early icy asteroids

The unusual properties of gallium have helped scientists to create delicate moulds that can be used to grow cultures of human cells resembling tiny blood vessels

Hope for a much-needed treatment for the common pregnancy complication pre-eclampsia has been raised by a successful test of an mRNA therapy in mice

From the first private moon landing to the first civilian spacewalk, Elon Musk’s SpaceX helped drive a big year for private space flight