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What would happen if the speed of light were half its value?

The universe would look very different if the speed of light were half its actual value, says one reader

High five from a cute scruffy dog with a big smile! Cream wall background, shallow depth of field. Clever dog, the Bailey lightbox

Do left- and right-handedness exist in animals? part 4

Two Astronauts on the Alien Planet Discover Plant Life. Space Travel, Discovery Of Habitable Worlds and Colonization Concept.; Shutterstock ID 1042736296; purchase_order: -; job: -; client: -; other:

This week’s new questions

Comment

An encyclopedia formed from AI hallucinations – what could go wrong?

Tom Gauld on scientific hubris

Environment

Earth from Above author returns with astonishing freshwater images

Twisteddoodles on how to lure unsuspecting academics

PY3E4B Fingerabdruck

Is it really true that all fingerprints are unique?

KEXX6Y Mowing grass

Is there a difference between grass cut at different times of year?

2NRWW3F London Colour Walk at Old Spitalfields Market, London, UK

Why do people view colours as clashing? part 2

An artist shares their perspective on how different colour combinations can affect us psychologically

What are the evolutionary advantages of growing a beard? part 2

This week’s new questions

Comment

Is there a word for the Wiki page for the Ship of Theseus paradox?

Physics

Photos reveal unexpected details from the world’s first atomic test