Every spring, I see spiny bugs that look like tiny alligators. They spend all day chomping up other insects outside my window. I asked my friend Rich Zack about them. He’s an insect scientist at ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. These hatch into larvae within about a week. Larvae are much smaller, longer, thinner and spikier than ...