Past UPSC exam topics consistently relevant to current affairs include national security, economic policies, and social justice issues. These themes reflect ongoing global challenges and domestic concerns, making them critical areas of study. Topics like climate change and technological advancements are also recurrent, as they directly impact governance and public policy. Candidates should stay informed on these subjects through reputable news sources, journals, and reports, ensuring they can connect theoretical knowledge with real-time developments, thus performing better in both prelims and mains.