Betashares Global Sustainability Leaders ETF (ASX:ETHI) share price analysis.The Betashares ETHI ETF provides investors with exposure to a diversified portfolio of global companies that fit within the environmental, social and governance (ESG) framework set, along with screening out companies with significant exposure to fossil fuels. ETHI has been certified by the Responsible Investment Association Australasia (RIAA), as part of the Responsible Investment Certification Program.