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Life & Evolution

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sparrow

ABOUT THAT LIGHT Another reason for caution in lighting up the night comes from a study of house sparrow difficulties in fighting off West Nile virus, which mosquitoes biting the birds can then spread to people.

E. coli colony

TANGLY TENDRILS  This colony of E. coli bacteria gets its wrinkly look thanks to tendrils of cellulose that it uses to build a supertight, sticky web. A new view of microbes’ cellulose shows how it’s different from the kind found in plants.

DNA robot illustration

RAPID ROTATION  A robot made entirely of DNA can rotate its arm (purple) 360 degrees or lock it down in certain positions thanks to special latches (yellow) on the bot's platform.

Life & Evolution

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