A think tank is a specialized organization, generally independent and often non-profit, dedicated to conducting research and providing analysis and solutions to complex societal issues. They serve as intellectual hubs that generate ideas and influence policy decisions across various sectors such as politics, economics, social matters, and the environment. Think tanks aim to aid decision-makers by producing evidence-based reports, policy recommendations, and analyses. Their work is intended to inform the public and government on how to improve public policy and address multifaceted problems. Think tanks may vary widely in focus and type: some are ideological, promoting specific political beliefs; others are policy-oriented, offering actionable policy suggestions; some engage in advocacy to influence public opinion; while others function within academia, government, or operate internationally. Despite differences, common traits include a policy focus, public purpose, expertise, and professionalism in research. Originating in the 19th century, think tanks have grown into global entities influencing both national and international policy through research, advice, publications, and discussions. They differ from universities, philanthropic organizations, government advisory bodies, and pressure groups by their unique role in providing independent intellectual support and policy alternatives.