What sticks but is not sticky?

A gecko—with adhesive powers that only recently have been approximated in the lab.

No suction, no glue—subatomic van der Waals forces allow it swiftly walk on nearly any surface, at any angle.

Check out this short video:

https://aeon.co/videos/the-key-to-geckos-unrivalled-climbing-skills-isnt-sticky-feet-its-subatomic