The study aimed to analyze and measure the impact of renewable energy consumption on economic growth in Jordan during the period 1990-2020 using time series analysis; the study tests the stationarity of the time series using the ARDL model. The results show a positive and significant effect of each, renewable energy consumption, gross fixed capital formation, carbon dioxide emissions, and total population, on the real gross domestic product (GDP). The study recommends the importance of government agencies adopting specialized programs in reducing emissions with stakeholders' participation. To work together to spread awareness in this field, limit the spread of these emissions, and ensure that this is a complementary condition for the sectors participating in these programs to obtain funding and provide it over other sectors.

During the past century, humans have increased atmospheric CO₂ concentration by at least a third, which is considered as the most important long-lived “forcing” of climate change. Scientists all over the world are responsible to do their best on offering practical solutions to reduce the effects of CO₂ on environment. This paper uses data envelopment analysis to measure the effects of researches accomplished by scientists from 30 countries which are representative of producing over 80% of CO₂ in the world. The study uses 10034 articles published in Scopus database from 1959 to March, 2019. The study uses the amount of CO₂ produced by each country as the input and total publications, h-index and I-10 as the output of the DEA model. The results indicate that despite the fact that China was responsible for producing nearly 30% of the CO₂, the scientists of this country contributed the least on carbon dioxide emissions. In addition, United Kingdom was responsible for about one percent of CO₂ emissions but the researchers of UK performed the best in terms of offering good quality studies.