Like many plants, onions have defenses to ward off creatures that may want to eat them. Their secret weapon is a kind of natural tear gas.
A weather expert explains where petrichor – that pleasant, earthy scent that accompanies a storm's first raindrops – comes from.
Perhaps you've noticed something unusual in the bathroom after you consume this healthy spring vegetable. A Speed Read explains there's two parts to the stinky puzzle: production and perception.
Our senses of taste and smell are linked to one another in ways that experts are continuing to explore. See if you can answer some questions for which experts have discovered some surprising answers.