Mathematics
Barcodes: How they could be your latest mathematical party trick
Barcodes contain a checksum – an ingenious use of mathematics that even lends itself to a fun way to surprise your friends, says Katie Steckles
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What is a smooth continuous curve with three axes of symmetry called?
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How and why did complex languages like Latin develop? Part 2
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This week’s new questions
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Comment
George R. R. Martin finally finishes… a physics paper
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Tom Gauld on the game of science
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Twisteddoodles on tree communications
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Comment
The strange geoengineering idea with potential for significant fallout
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Space
How to spot Bode’s galaxy this month
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Should we be thinking about genetic modifications for humans on Mars?
Paying homage to Kim Stanley Robinson’s Mars trilogy of books and to the film Interstellar, our readers consider the upsides and downsides of genetically altering our future space explorers
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Why don’t trees rot in the ground, while wooden structures do?
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This week’s new questions
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Tom Gauld on stars and gutters and Oscar Wilde
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Twisteddoodles on the first time doing an experiment
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