DEAR JOAN: I found an Indian walking stick on my garage door this morning. I have seen some in Australia and Costa Rica, but never in California. I have lots of ivy in my front yard. Should I be ...

Stick insect relatives: different in appearance but of the same origin. Surprisingly, New World (above) and Old World stick insects (below) form their own evolutionary lines within this insect group, ...

It’s obvious why a stick insect’s wardrobe is the way it is. Look like a stick, avoid getting eaten. But scientists in Japan noticed that despite their camouflage, stick insects became bird food quite ...

Even though they are so strikingly different, these stick insects from the Old World are genetically more similar to each other than their relatives that are geographically distance in the New World.