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This paper investigates the nexus among renewable energy consumption, carbon dioxide emissions, economic development, and service growth in Tunisia under the linear and non-linear autoregressive distributed lags techniques and the Granger causality tests, for the 1980–2020 period. The empirical linear findings proved that renewable energy and service growth positively affect carbon emissions in the long term. The non-linear findings proved that a negative energy shock positively influences environmental quality in the long term. More prominently, in the long run, unilateral causalities from all the modeled variables to carbon emissions have been revealed. To mitigate climate change and get the economy back on track for more prosperity, the Tunisian government must develop an efficient strategy friendly to the environment and further explore the relationship between new technologies and renewable energy. Indeed, we propose to policymakers to encourage and promote the use of innovative clean technologies in the production of renewable energy.

This study explores the interdependence among a sanitary crisis, environmental degradation, oil prices, and economic activity in the USA based on weekly data over the period from January 03, 2020, to October 02, 2020, through VECM and Granger causality methods. The study period is characterized by lockdowns and mobility restrictions due to COVID-19 pandemic that may affect the economic and energy sector in the USA. Thus, a meticulous analysis of the impact of a sanitary crisis on economic and energy sectors seems to be crucial. Findings are very interesting and confirm the existence of a significant impact of a COVID-19 pandemic on WTI oil price. More importantly, bidirectional causal relations between the three couples: COVID-19 infections-carbon emission, COVID-19 infections-economic growth, and COVID-19 infections-oil price are also discovered. Taken together, our empirical findings are effective for the relevant authorities and policymakers in the USA to develop an appropriate financial and fiscal policy such as reducing interest rates, subsidizing, promoting sustainable industrialization, and carbon taxation to boost investment and to recover the economic growth without harming the environment and complicating the sanitary situation.