Science
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The award-winning atmospheric scientist on the urgency of the climate crisis and why people are her biggest hope
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Things to look out for in the night sky over the coming months, from meteor showers to supermoons -
Collision will ‘cause fireworks’ but probably won’t happen for about 2.5 billion years -
Chang’e 4 will test soil composition, try to grow plants, and listen for traces of Big Bang -
‘The Nation’s T rex’ will stand upright for the first time in 66m years alongside 720 specimens as part of a five-year overhaul
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Seas absorb 90% of climate change’s energy as new research reveals vast heating over past 150 years -
Scientists compared DNA of 10 species and found 24 genes which marked out males that stayed with their mates -
Key issues
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The physicist’s former research student recalls their close relationship at Cambridge, the sheer might of his intellect, and how he once bored the great man to sleep
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At the COP24 conference, leaders lack the urgency felt by communities on the frontlines of a global threat -
Landing a spacecraft on the far side of the moon is a fine achievement – and propaganda win
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The solutions to today’s puzzles -
Calculations to kick start the new year -
The solutions to today’s quiz and puzzle -
Test your knowledge of Tweet-speak, plus a social media maths puzzle
Multimedia
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Some scientists think a supervolcano in India led to the demise of the dinosaurs. Graihagh Jackson investigates -
The rover from China's Chang'e 4 probe separated from its lander on Thursday evening after the probe touched down on the far side of the moon. It is the first spacecraft in the world to achieve a lunar soft landing
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A Chinese spacecraft has made the first landing on the far side of the moon
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Nasa’s New Horizons spacecraft has beamed home its first close-up images of Ultima Thule, a lump of rock the shape of an unfinished snowman that lies 4 billion miles away on the edge of the solar system
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Nasa's Juno craft has captured giant, chaotic weather systems plus taken new measurements that will help build unprecedented map of the planet’s interior
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Tim Peake beat more than 8,000 applicants to the job. Here, he shares some images of the training he underwent, as seen in his new hardback, The Astronaut Selection Test Book
Animal behaviour How the internet went nuts for New York’s squirrel influencers