A tug-of-war explains a decades-old question about how bacteria swim

Scientists have uncovered a new explanation for how swimming bacteria change direction, providing fresh insight into one of ...
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How to wash apples to remove dirt and pesticides, according to an expert

The easiest and most effective way to wash away germs and dirt is by rinsing the apple under running water, he says. You can also use a spray of vinegar and water or baking soda and water; just be ...