Climate say causes over 8 per cent of greenhouse . This figure will . Their study looked at the CO2 emissions from , hotels, restaurants, shopping, . Researchers looked at tourism in 189 . They studied the of over one tourism .
Domestic travel caused CO2 emissions than international . Air travel caused the . The countries with the tourism carbon were the USA, China, India and Germany. Their will increase more of their will travel. Travelers should cut their footprint to help .