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EMILY KWONG, HOST: Hey, everybody. Emily Kwong here. Today we re going back to school, where we revisit something you may have learned in science class and go a bit deeper with it. Joining me in this is science correspondent Geoff Brumfiel.
GEOFF BRUMFIEL, BYLINE: And today, Emily, I ve got a good one for you. It s one of the most mysterious forces in the world, but you can find it on your fridge. I m talking about magnets and magnetism, which is a fundamental force of nature. It can feel a little bit like magic.
KWONG: Yeah.
BRUMFIEL: But how it works is really interesting. And I m going to tell you something else. We all should know how magnets work, Emily, because magnets matter.