This week鈥檚 new questions
Can a tree reabsorb its own branches? How long would it take to erase human civilisation? Why do dogs and horses roll on their backs? Send us your answers
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Technology
Roma Agrawal: The amazing engineer who designed the Shard’s spire
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Life
Endangered whale sharks strain fish out of the water using huge mouths
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Space
Man on the moon? Why we said Apollo 11 was an empty, obsessional quest
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Technology
How to be a maker series 2: The complete list of everything you need
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Feedback: The very British ethnography of queuing
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Technology
Electronics projects for beginners: Get your plants talking to you
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How far do we travel through the universe in our lifetimes?
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Why does menthol give me a cold sensation in my nose?
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This week’s questions
How long must a wind farm operate to pay back the energy used to build it, and how exactly does water hydrate us when most of it passes straight through?
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Health
Why I鈥檓 growing bits of human intestine in a dish in the lab
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Liana Finck cartoon
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Liana Finck cartoon
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Health
Ren茅 Favaloro: Heart surgery pioneer celebrated in Google doodle
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