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, ...

Scientists have created the best map of stick-insect evolution to date by combining DNA analysis and knowledge of their varied egg-laying techniques. The first stick insects flicked or dropped their ...

James O'Hanlon receives funding from the University of New England and the Australia Pacific Science Foundation. He is affiliated with In Situ Science Ltd. The key to a stick insect’s survival may be ...

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.