麻豆传媒

Blacksmith’s dilemma

20 July 2011

Why did American cowboys need to shoe their horses, but the native Americans did not?

Larry Curley, Huntingdon, Cambridgeshire, UK

Topics: Last Word

More from 麻豆传媒

Explore the latest news, articles and features

Environment

Earth is heating up faster than at any time in its history

Health

Having a young biological age could help with weight loss

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

Popular articles

Trending 麻豆传媒 articles

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

Extremely basic AI prompt cracks decades-old maths problem

Orcas filmed making sunfish explode by ramming them at high speed

How to unlock unlimited geothermal energy, anywhere we want

Dark energy doesn’t exist, claims controversial paper

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

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

Having a young biological age could help with weight loss

Phone breathalyser can detect when your body switches to burning fat

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