Honeybees are at risk, along with the crops they pollinate


By AGENCY
Can scientists find a way to work out whether bees are stressed so beekepers can intervene? Photo: dpa/Deutsche Presse-Agentur GmbH/Frank Rumpenhorst

The honeybees looked perfectly healthy, buzzing about their boxy wooden hive on a warm autumn day in central Pennsylvania.

Elizabeth Capaldi suspected otherwise.

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