Science
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Officials say spacecraft is in stable orbit but problem may delay mission to carry Nasa astronauts -
Analysis finds there may be no universal concepts for some emotions
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Pyrocumulonimbus storms are feared due to the violent and unpredictable conditions they create on the ground -
Dating of bones from Indonesia confirm Homo erectus roamed planet for 1.8m years -
Successful launch from French Guiana of European project comes day late after glitch
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Research shows underground storage can create new compound of element which could affect groundwater -
Anchors were excavated from sediment in the Gulf of Mexico near the settlement the conquistador founded upon landing -
Science Weekly podcast
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For the final science weekly of 2019 the Guardian’s Science team – Hannah Devlin, Ian Sample and Nicola Davis – talk through their top stories of the year including black holes, rebooted brains and seagulls -
Ketamine might sound like an unlikely candidate for treating addiction and depression. But a growing number of scientists believe the drug could help. In the second part of this Science Weekly mini series, Hannah Devlin speaks to another expert using ketamine in their work: a psychiatrist who has been conducting research on the use of ketamine for treating depression for several years -
Ketamine might sound like an unlikely candidate for treating addiction and depression. But a growing number of scientists believe the drug could help. Over the next two episodes of Science Weekly, Hannah Devlin speaks to two experts who are using ketamine in their work in very different ways. In this episode, we’re focusing on alcohol dependency and the findings that a single dose of Ketamine could positively impact on heavy drinkers -
Dr Amy Dickman talks to Nicola Davis about her career trying to bring a halt to the decline in big cat populations
Key issues
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Science and art meet on a mind-blowing visit to the European Organization for Nuclear Research, while the fairytale streets of the Swiss capital are a wonder, too
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How to tell a drug dealer from a pastry chef, the scientific way -
I’ve covered some of the biggest stories of our age, but this is the biggest and could change what it means to be human -
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The solutions to today’s puzzles -
A multi-layered brain snack -
The solutions to today’s puzzles -
Slippery brainteasers and a Christmas challenge
Multimedia
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For the final science weekly of 2019 the Guardian’s Science team – Hannah Devlin, Ian Sample and Nicola Davis – talk through their top stories of the year including black holes, rebooted brains and seagulls
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The night sky above the US midwest was illuminated by a meteor on 11 November
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Since launching in 1977, the Nasa probe has captured never-before-seen images of the solar system
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Engineers demonstrate new spacesuits designed to fit a more diverse crew with the goal of landing the first woman on the moon by 2024
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Marine biologists recorded the feeding behaviour for the first time off the coast of Alaska, where the whales lurk around salmon hatcheries that release juvenile fish into the sea
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The Geological Society has announced the winners of this year’s competition, which for the first time includes images taken from around the world
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