ESG (Environmental, Social, and Governance) criteria can be used to improve sustainability by ensuring that companies operate responsibly and ethically. ESG criteria focus on factors such as emissions and carbon levels, labor rights and practices, governance standards, human rights, and financial transparency. Companies that adopt practice and policies in line with ESG criteria support sustainability and can gain access to capital from investors that prioritize these practices. ESG criteria can also help focus attention on sustainability issues, encouraging companies to work to reduce their environmental impact and become more socially responsible.