Technology
How to build a motion-detector wildlife camera with an old smartphone
Make a motion-controlled wildlife camera with an old smartphone and find out what birds, bees, butterflies and badgers are visiting your garden
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Should we be scared of meth gators and mutant crocodiles?
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Special effects: What creates stripes and colours in the sky?
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A key question: The secrets and security of a rotor-style lock
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This week鈥檚 new questions
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Physics
Physicist Jim Al-Khalili on Leeds United, Einstein and quantum biology
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Technology
Awkward truths about Boris Johnson’s praise for UK science and tech
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Environment
Huge Arctic fires have now emitted a record-breaking amount of CO2
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Liana Finck cartoon
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Space
What happened when the Shoemaker-Levy 9 comet smashed into Jupiter
From the archives: In 1994 comet Shoemaker-Levy 9 hit Jupiter, creating fireballs 2000 kilometres across 鈥� and raising US Congress alarm about what would happen if one hit Earth
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Technology
Electronics projects for beginners: Make an automatic plant waterer
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Vladimir Putin is worried that wind turbines are disturbing worms
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Lucky dip: What’s the best strategy for winning the lottery?
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Itchy and scratchy: why doesn’t a mosquito bite stop being itchy?
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