Going viral: How can you get flu after vaccination?
A reader came down with flu three weeks after being vaccinated. How could this happen? Insight from our readers
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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
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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?
Cats appear to dislike water, so how did they catch and learn to like fish? Readers respond with some insights on cat behaviour
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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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Environment
California has huge environmental inequality 鈥� here’s how to fix it
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Environment
Art prints made using rain, fog and snow reveal the nature of water
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