Unless you walk or cycle, travelling means putting out extra CO2 emissions, the greenhouse gas that causes global warming.

However, there are a few things you can do to minimise the impact of your next trip.

First, consider where you go. Cars, buses, planes and trains that burn fossil fuels all release CO2. The further you travel, the more you pollute. Stay close to home to reduce your carbon footprint.

Also, support travel companies that preserve the environment and support the local community. Ask your travel agent for suitable resorts or check specialist publications like Lonely Planet's Code Green.

Second, consider your transport. Exactly how much CO2 cars, planes and trains put out depends on many factors.

However, studies show aeroplanes pollute the most per kilometre travelled, while electric trains pollute the least.
If you must use the family ride, make sure every seat is filled.

Third, treat your holiday home as your own and look for ways to cut down on the amount of CO2 and other greenhouse gases your lifestyle creates.

As resorts run air conditioning and lights 24/7, conserve energy by switching everything off when you leave for the day.

Remember laundry takes a lot of energy and involves bleach, soap and other pollutants, so re-use your towels and ask the housekeeper not to change the sheets every day.

Do not litter, even if there is a clean-up scheduled every day. Litter is not just ugly to look at, plastic bags and six-pack rings trap, choke and kill fish, birds and small mammals.

Finally, while you may not like insects, they are food for songbirds and other animals. Buy rub-in repellent instead of sprays that spread in the wind.

Now you can enjoy your holiday with an easy conscience.