Why does ‘falling’ in dreams happen?
You can be drifting off to sleep and then the feeling that you are falling suddenly brings you back to reality. Our readers explain why this happens
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Do ants bury their dead?
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This week鈥檚 new questions
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Humans
Psychedelic skies over Chile reveal the full extent of light pollution
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Twisteddoodles on bacteria that like to prank researchers
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Tom Gauld’s diagram of the scientific method
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Environment
The epic journeys of green sea turtles revealed by 50 years of data
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How to solve one of the world鈥檚 hardest maths problems for under $25
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How do city trees get enough water?
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Where鈥檚 the best place to be buried to preserve your body as a fossil?
Want to preserve your body as a fossil for future generations? Readers give their suggestions on the best ways to do it
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This week鈥檚 new questions
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Twisteddoodles on getting used to the new normal
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Tom Gauld on when you need 7 tonnes of bananas for an experiment
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Technology
Mega solar plant uses 170,000 mirrors to generate heat for electricity
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