Future fossils: Will new coal and oil reserves form once we’re gone?
The answer relies on knowing how existing fossil fuels were made, as one reader explains 鈥� but nothing precludes a second industrial revolution far in the future
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This week鈥檚 new questions
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Technology
The hardest thing about robots? Teaching them to cope with us
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Liana Finck cartoon
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Technology
How to build a motion-detector wildlife camera with an old smartphone
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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
Quantum physicist and broadcaster Jim Al-Khalili talks footballing ambitions, dream chats with Einstein and the incredible connection between gravity and space-time
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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
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