The global economic outlook is more uncertain than ever before and sensitive to uncertainties related to a variety of economic policies decisions of all stakeholders and governments. These perceived uncertainties may be the culprit in shrinking the size of overall economic activity. Under increasing uncertainties, travel and vacation plans of consumers can be canceled or postponed. Therefore, policy-related economic uncertainties are expected to affect tourism demand beyond well-established economic and noneconomic factors. In this study, we explore the efficacy and the impact of the economic policy uncertainty (EPU) index in predicting the tourism demand on international tourist arrivals (a measure of tourism demand) to the United States from Mexico and Canada over the period of January 1996–September 2017. The findings of the study reveal that EPU is a significant predictor as increases in the EPU index lead to decreases in tourism demand to the United States. Canadian tourists seem to be more sensitive to EPUs. Increases in the EPU index cause them to reduce Canadians’ vacations to the United States proportionally more than the Mexicans. To enhance the explanatory power of current models, the uncertainty can be a theoretically significant construct thus needs to be included when calibrating demand models.

This paper investigates the dynamic causalities between economic growth, financial development, international trade, tourism expenditure and/on the CO₂ emissions in Greece over the period of 1970–2014. For this purpose, the Zivot-Andrews unit root tests and the Autoregressive-Distributed Lag (ARDL) models were applied. The Vector Error Correction Model (VECM) and the robustness of causality test results indicate that Greece’s economic growth, financial development, international trade, tourism expenditures, and CO² emissions are co-integrated in the long run. The empirical findings show that economic growth, financial development, international trade, and tourism expenditures caused increases in Greece’s CO₂ emissions. It should be noted that tourism, as a leading sector in the Greek economy, has serious negative environmental impacts for Greece in the long run. Therefore, the policy makers of Greece should strongly take into consideration this threat from the tourism sector as the whole Greek economy is dominated by this one sector.