Crunch, crunch, crunch—that’s the sound of fall under your feet. For many of us, leaf piles scream childhood joy, backyard chores, or maybe even a quick Instagram photo op. But beneath those layers of ...

You’ll have to look closely to spot a giant Malaysian leaf insect when it’s nibbling on the leaves of a guava or mango tree. These herbivores blend in seamlessly with their surroundings because they ...