Twisteddoodles on the best scientific greetings cards
This week's cartoon from Twisteddoodles
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Humans
How tempering chocolate hacks its crystalline structure
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Going viral: How can you get flu after vaccination?
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This week鈥檚 new questions
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Stockbrokers take on cows in a battle of investment strategy
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Health
From alcohol to ketamine, what’s the truth about recreational drugs?
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Life
Hundreds of millions of locusts are forming swarms bigger than cities
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Tom Gauld on being a small mammal in the large reptiles department
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Twisteddoodles on a surprising group of human mutants
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Humans
The life of Veronique Le Guen, record-breaking caver
Veronique Le Guen died in 1990, just two years after she had set a world record for the most time spent alone in an underground cavern
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Humans
Use the science of curing to turn salmon into gravlax at home
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Fish dish: How did cats get a liking for fish?
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Mind fuel: Can you think yourself thinner?
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This week鈥檚 new questions
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