April showers bring May flowers. But in this case, the blossoms are too small for even a bumblebee to see.
Engineers at Harvard University have figured out a way to make microscopic sculptures of roses, tulips and violets, each smaller than a strand of hair.
To get a sense of just how small these flower sculptures are, grab a penny and flip it on its back. Right in the middle of the Lincoln Memorial, you'll see a faint impression of Abraham Lincoln. These roses would make a perfect corsage for the president's jacket lapel.