It's not quite five in the morning and we're walking along a track in the forest. The moon is high in the sky and provides enough light for us to see where we are going. A wolf howls in the distance. We have come to Poland's Białowieża Forest, the last refuge of the European bison, in the hope of getting a glimpse of this greatly endangered animal in its natural habitat.
If getting there by car, instead of by train or bus, be generous and share the space. By taking other people who might have made their journey in a separate car, you're putting one less car on the road.
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