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Is foam a solid, a liquid or a gas?

Foam is a colloid, a small amount of liquid or solid wrapped around a lot of gas, explain our readers  

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Can a person experience more than 24 hours in a day? part 2

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This week’s new questions

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Comment

How big is a ‘shedload’? Let’s ask the nuclear physicists

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Tom Gauld on truly committing to botany

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Twisteddoodles on the latest in food influencing

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Space

Captivating space images show how it has inspired us through the ages

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EH7TAT Clock faces, illustration

Can someone experience more than 24 hours in the same calendar day?

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A 3D illustration of the now debunked competing conspiracy theory that the Earth is flat, as it appears from land, rather than spherical. Earth texture maps courtesy of NASA.gov; Shutterstock ID 1240127368; purchase_order: -; job: -; client: -; other:

What would the landscape look like on a disc-shaped world? part 2

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Mandatory Credit: Photo by Karl Petersen/EPA-EFE/Shutterstock (9760878a) A general view shows an iceberg stranded near the village of Innaarsuit, in the Avannaata Municipality, northwestern Greenland, 12 July 2018 (issued 13 July 2018). The Avannaata Municipality was alarmed on 11 July, after a huge iceberg was grounded just outside the village of Innaarsuit. According to local media, police asked villagers who live closest to the water, to leave their houses over fears the iceberg could calve and affect the village with a tsunami. Iceberg grounded outside village in northwestern Greenland, Innaarsuit - 12 Jul 2018

This week’s new questions

What tipping points can we expect to see if and when we reverse global warming? Why do teabags make fairly good tea, but coffee bags don’t make very good coffee?

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Comment

It’s time to monetise the moon! Definitely! Maybe?

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Twisteddoodles on a resistant bacterial strain

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Environment

A glimpse into the rare earth riches of Greenland

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Tom Gauld on a Foundation for Astonishingly Extravagant Gestures

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