Here are some articles a friend sent to me recently (thanks Katie!).
The second article is about gecko tape. Geckos have a really fascinating ability to climb on the pads of their feet using Van der Waals interactions between the tiny setae (each with a diameter of 5 micrometers) on the pads of the toes and the surface of the thing it is sticking to. The article says that tape and adhesive technology being developed now that imitates the gecko’s abilities may be available on the market in 3-5 years!