Climate in Australia say causes over 8 per cent of greenhouse . They say that this will increase because the tourism is growing. Their looked at the carbon footprint of areas of tourism. It studied the CO2 from transport, events, hotels, and shopping (including making souvenirs). Researchers spent 18 months on their research. They looked at the tourist activities of 189 countries. A researcher said her team analyzed the on the environment of over one million businesses involved in tourism.
The researchers said travel caused more CO2 emissions than international . Air travel was the largest of all tourism. Flying will continue to increase emissions as people become richer. The countries with the tourism carbon footprints were the largest and nations - the USA, China, India and Germany. Their carbon emissions will increase as more of their travel. The researchers said holiday-makers should try and reduce their carbon footprint so their cause harm to the .