Micro robot climbs vertical glass carrying 100 times its weight

A 9 gram "micro tug" robot climbs vertical glass carrying 1 kilogram (2.2 pounds) payload enabled by gecko adhesives with 200:1 anisotropic adhesion. The ability to carry 100 body weights is comparable to a human climbing up a glass building while carrying an adult elephant. A 20 milligram climber is also demonstrated.