Witnessing natural wonders across the globe is one of the greatest thrills for wildlife fans.
But anyone who really cares for the environment will wrestle with their conscience when it comes to travel.
BBC presenter Liz Bonnin - a biologist and biochemist who has carved out a career reporting on worldwide nature stories - says embarking on long-haul, fuel-guzzling journeys to fragile ecosystems isn't something to be taken lightly. "I think there's a really good balance to be struck," she says. "If we do things right, we can of course visit these incredible places. It's just about how we do it, to what extent and how well it's managed." So how can you travel without leaving too big a footprint?
1 OFFSET YOUR MILES
"I'm offsetting my flights, which I think is something we should all do," says Bonnin."I travel so much for work. We've had people discuss that with us - it's all very well saying protect the planet, but think about all the air miles. You have to reconcile it." You can do this by totting up your emissions using an online carbon calculator and counter-balancing your pollution by investing in a green project, such as one that develops renewables.
2 EXTEND WORK TRIPS