Diesel exhaust is upsetting honeybees' ability to recognize flower scents, according to a study. Even the cleaner, ultra-low-sulfur type of diesel used in the U.S. and Europe can wreak havoc on a honeybee's senses, according to the research published in Scientific Reports. The exhaust causes certain chemicals in floral odors to degrade, disrupting a bee's ability to recognize distinctive floral scents.

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