The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

All pictures copyright © Martin Leissl | Photographer Frankfurt

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"

The biologists Martin Gossner and Ulrich Simon are treetop scientists who research insects that only live in these lofty heights. In their climbing school, they offer tree-climbing lessons for children and adults.

For german newspaper "Zeit"