麻豆传媒

Ropey soap

4 January 2012

What causes or inhabits the black cracks that form on old, infrequently used bars of soap?

Polly Andrews, Great Yarmouth, Norfolk, UK

Topics: Last Word

More from 麻豆传媒

Explore the latest news, articles and features

A sketch depicts the solar atmosphere during a June 16, 1806, total solar eclipse

Space

10 of the best pictures of solar eclipses throughout history

A 3D diffusion spectral imaging scan of bundles of white matter nerve fibres, parts of neurons called axons

Mind

Most neurons seem to be jacks-of-all-trades, not specialists

Space

We now know how a black hole can be flung across the universe

Health

There are only a few anti-ageing supplements that actually work

Popular articles

Trending 麻豆传媒 articles

Inhaling high-dose CO2 clears Alzheimer’s proteins from the brain

Orcas filmed making sunfish explode by ramming them at high speed

Fields medal 2026: Work on unifying laws of physics wins maths prize

Dark energy doesn’t exist, claims controversial paper

Extremely basic AI prompt cracks decades-old maths problem

What the world鈥檚 happiest countries can teach us about joyful living

There are only a few anti-ageing supplements that actually work

AI’s solution to 87-year-old riddle takes mathematicians by surprise

This El Ni帽o will be the hottest by a huge margin

Can sounds make plants grow bigger? A start-up says they can