Slums are densely populated informal settlements that lack basic amenities and sanitation. They form due to poverty, lack of opportunities in rural areas, unemployment, and improper government policies. Slums face many problems like lack of hygiene, malnutrition, child abuse, and crime. Around 40 million people in India, or 4% of the population, live in slums, including 5 million children under age 6. Various government initiatives and NGOs aim to rehabilitate slums and provide basic services through programs like JNNURM and SRA. The long term goal is to reduce rural-to-urban migration by improving opportunities and living standards in rural India.