Translation of circa in German

Last weekend some friends of mine and I took a trip to the North-West of Massachussets to see the leaves which have changed their colors. All over the world people talk about the autumn in Boston.
Everyone has the right to get a second chance, the option to live in reconciled circumstances. The environment has so much influence on us that we need to be aware of it even in very hard times.
After a short guided tour we came back to pick up our luggage and left to the airport. When the airplane took off it was already dark outside. We were surprised about the airline's good condition and service.