Why are ripe fruits sweet and why is it so important? -Alexa, Schenzhen, China
My friend Kate Evans said the answer really depends on whether you want the perspective of a person, a plant, or even a cat. Evans is a plant scientist at Washington State University in Wenatchee, where she investigates fruit in the Apple Capital of the World.
She explained how long ago, wild apples actually grew in forests. Without farmers around to plant them in orchards, trees had to scatter their own seeds to survive.
For some trees, the key to survival is growing sweet, ripe fruit. » More …