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Earth

Pesticides mimic estrogen in shellfish

Two common water pollutants can function in shellfish as estrogen does, but they have different behavioral effects on two species.

Astronomy

The magnetic link between star and planet

Astronomers have for the first time directly measured the magnetic field of a star known to host a giant planet.

Tech

A nano–cheese slicer

Stringing a carbon nanotube between two needles yields a nanoscale cheese knife that could improve slicing of biological samples.

Health & Medicine

Salad Doubts

Researchers are looking into new ways to sanitize harvested produce and prevent foodborne pathogens from infecting people.