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- Climate
Matt Crenson, Reconstructions
In ancient Southwest droughts, a warning of dry times to come.
- Humans
Matt Crenson, Reconstructions
Tools tell a more complicated tale of the origin of the human genus.
- Science & Society
Alexandra Witze, Earth in action
Loss of eyes in the sky hurts science on the ground.
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Grocers stacking oranges demonstrate intuitive grasp of sphere-packing math
They may not know it, but grocers face some of the most difficult questions in mathematics when stacking produce each day. Four centuries ago, the astronomer and mathematician Johannes Kepler guessed that the standard grocers’ method of piling oranges packs the most fruit into the least space. Confirming he was right had to wait until […]
