Hinduism - A Scientific Cultural and Most Ancient Religion 

Science - Scientific achievements of ancient Hindus (Indians)

Vedas - Spiritual and Scientific Texts of Hinduism

Yoga - The perfect ancient Hindu art of maintaining physical & mental fitness 

Bhagavad-Gita - The greatest ever work on human psychology and values in life.

Mahabharatha - A true Ancient Indian Story and also the world's largest epic.

Ramayana  - Another true Ancient Indian Story pre dating Mahabharatha

Festivals - Festivals of Hinduism and the scientific reasons behind them.
 

Buddhism - A Great Scientific Religion of Ancient India with its philosophy deeply related to Quantum Mechanics