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Neuroscience

Brain waves common during sleep also show up in awake sheep

Sleep spindles, thought to help solidify memories in people, may do similar work during wakefulness if these daytime ripples occur in humans.

Animals

Bright yellow spots help some orb weaver spiders lure their next meal

Experiments with cardboard arachnids suggest that orb weaver spiders have evolved yellow colorations on their undersides to attract bees and moths.

Chemistry

Evaporating mixtures of two liquids create hypnotic designs

Through the magic of surface tension, mixtures of two liquids form fingerlike protrusions and other patterns as droplets evaporate.

Space

Cecilia Payne-Gaposchkin revealed stars’ composition and broke gender barriers

The book ‘What Stars Are Made Of’ celebrates the life of astronomer Cecilia Payne-Gaposchkin.