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Measuring the environmental performances by indicators is considered as a crucial step to keep track of progress towards sustainability. This study compares trends in environmental sustainability indicators worldwide, Portugal, Brazil and two universities in these countries. The data collection is done based on findings from the Organisation for Economic Co-operation and Development (OECD) between 2007 and 2017, and reports from both universities between 2010 and 2018. As a result, it can be seen that global Carbon Dioxide (CO2) emissions decreased (10.6 to 9 ton/capita). Portugal also reduced its CO2 till 2014 (5.2 to 4.6 ton/capita) but experienced a raise in its rates in the following years. Brazil experienced a growth in its CO2 (1.7 to 2 ton/capita), as did the Portuguese university (0.85 to 0.87ton/alumnus). World municipal waste decreased (541.8 to 524.4 kg/capita), as well as in Portugal until 2013 (513.7 to 436.7 kg/capita), but in the following years increased. Similarly, Brazil reduced the indexes until 2011 (271.9 to 266.8 kg/capita) and increased in 2012. In the Portuguese university, the rates increased until 2014 (4.02 to 9.02 kg/student) and reduced in 2015, as in the Brazilian university that increased until 2018 (19.53 to 25.08kg/student). Portugal, Brazil, and the two universities pointed out a trend of increasing emissions and waste while the world data a reduction. The Brazilian university had higher municipal waste rates than Portugal. The consumption of water and energy in the Portuguese university decreased while it increased the Brazilian university. Actions have already been undertaken at universities to lower the environmental burden by improving the energy efficiency of buildings through the use of cleaner energy, setting up mobility studies, and campaigns to reduce consumption and cut down waste generation.

iop conference series. earth and environmental science

Comparative Analysis of Sustainable Development Environmental Indicators Between Worldwide, Portugal and Brazil and Between two Universities within these Countries