Climate change is the biggest global emergency we are facing, and using litigation to hold corporate polluters accountable for misleading consumers is one among a variety of avenues to combat this crisis. A recent report by the European Commission showed that 42% of online market websites contain false, deceptive or exaggerated environmental claims and could qualify as unfair commercial practice under European Union (EU) regulations. These are “greenwashing” claims, and the litigation brought on that basis highlights the gap that exists between environmental claims and actual action. In this blog post, Akriti Bhargava, Karla Martínez Toral and Aradhna Tandon explore what constitutes greenwashing practices, how these have been challenged in European courts and some implications for litigation of the EU Taxonomy.