Life
How squirrels use their tails to square up to deadly cobras
In the squirrel vs snake stakes, big bushy tails give Cape ground squirrels an edge when they face off Cape cobras armed with a venom that kills in just an hour
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Feedback: Why Spiderman could be the best cure for arachnophobia
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Space
Why ‘Martian’ Tanya Harrison loves everything about the Red Planet
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Space reflectors
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Technology
How to make a reading light and learn about circuits
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Liana Finck cartoon
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Technology
Want to build robots and invent stuff? Here’s where to start
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Feedback: Advertisers set their sights on the night sky
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Bring me sunshine
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Canine connection
While quietly walking my small dog, we often pass houses where the dog inside, which is out of sight, begins barking. How does the dog know to bark if it can't see, smell or hear us?
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This week’s new questions
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This week’s new questions
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Physics
Marcus du Sautoy: How maths blows my mind 鈥� and how it will save us
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Space
From the archives: How do you get astronauts back from space?
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