Hot source
If nuclear waste is still so radioactive, why can't we continue to use it as an energy source?
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Time and tide
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Spin a yarn
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Feedback: Sacred geometry carafes serve up restructured water
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Environment
Pink weevil spreads its wings to prepare for rainforest take-off
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Technology
Eyes on the skies: ensuring drones enhance city life
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Feedback: Betting on a round Earth could leave you out of pocket
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Swimming school
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Seasons in the sun
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Not my cup of tea
I live in a hard-water area and find that vinegar is a cheap and effective way to descale my kettle. But no matter how much I rinse afterwards, I won't get a decent cuppa for a week. Given that the kettle is stainless steel and plastic, why does the taint stay so long? A proprietary citric acid descaler presents no such problem, but is less effective and more expensive.
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Mental block
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Trouble brewing your tea? Not if you build a diligent Dunkbot
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Feedback: Why the colour of #TheDress depends on your bedtime
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Sleeping sickness
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