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Anthropology

Beads suggest culture blocked farming in Northern Europe

Baltic hunter-gatherers blocked farming’s spread from south.

Astronomy

Cyanides around young star signal complex organic chemistry

Abundances of cyanide compounds around a young star match those found in comets in our solar system.

Animals

Dealing with droughts, museums going digital and more reader feedback

Readers share their experiences with dry weather in the U.S., discuss how humans mentally sort quantities and more.

Science & Society

One anniversary to celebrate, one to contemplate

In this issue, both feature articles focus on anniversaries, though of two very different kinds.