Blogger GrrlScientist takes some time to remind us all of what love really is — scientifically speaking, anyway. "If you are a scientist, you would probably know that love is the result of a biochemical cocktail of hormones and neurotransmitters that is zapped by electrical signals leaping between neurons," she says, introducing a video showing a scientific explanation of the emotion. And she adds a friendly reminder: "I thought I'd remind you that Valentine's Day is stampeding upon us, its hot breath snorting down our necks. Nervous?"
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