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Neuroscience

Separate brain circuits drive fentanyl addiction

New therapies might be able to treat addiction by selectively targeting withdrawal


A new artificial-nose-like sensor can sniff out organic compounds

Human olfactory receptors bound to an electronic device can identify airborne odorants

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Pollution

Tiny robots with polymer ‘hands’ capture bacteria and microplastics in water

Microbots that self-assemble into planar swarms can catch free-swimming microbes


Dow presents rosy view of the future

At an investor event, the company promotes sustainable investments as an earnings driver


Miniature polymeric tubes separate enantiomers

Devices could offer an alternative to chromatography and speed screening of chiral compounds