“It was a pleasure to have Marcel speak at our annual customer conference in Berlin 2019. Circl8’s approach to the concept of sustainability is very insightful and thought provoking at times too.

Their work helps people and organizations understand the multiple ramifications of the sustainability topic. We think we know a lot about it but it is a lot richer and complex than we think. Thank you for your support at the event.”

Frédéric Barou

Senior Vice President, Online Travel Companies

Northern, Eastern, Central and Southern Europe

Travel Channels

Amadeus