Why can't we replace sniffer dogs with electronic noses?

Compared to other senses, our sense of smell is often overlooked. Our noses can alert us to risks such as rotten food, gas leaks and burning toast. But for advanced tasks such as detecting bombs or contraband, or diseases ...

How fruit flies sniff out their environments

Fruit flies—Drosophila melanogaster—have a complicated relationship with carbon dioxide. In some contexts, CO2 indicates the presence of tasty food sources as sugar-fermenting yeast in fruit produces the molecule as a ...

Researchers crack 30-year-old mystery of odor switching in worms

Soil-dwelling nematodes depend on their sophisticated sense of smell for survival, able to distinguish between more than a thousand different scents—but the molecular mechanism behind their olfaction has baffled scientists ...

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