The links in green are activated while those in red will be activated soon. Here are all the links:-

Ch1 - Indian Contributions to Science
Ch2 - Astronomy in India
Ch3 - Chemistry in India: A Survey
Ch4 - The Historical Evolution of Medicinal Tradition in Ancient India
Ch5 - Plant and Animal Science in Ancient India
Ch6 - Mathematics in India
Ch7 - Metallurgy in India
Ch8 - Indian Traditional Knowledge on Environmental Conservation
Ch9 - Ayurveda for Life, Health and Well-being: A Survey
Ch10 - Nobel Laureates of Indian Origin and Inspiring Lives of Scientists and their contribution
Ch11 - Conventional, Non-conventional and Clean Energy Sources of India
Ch12 - Science and Its Various Branches
Ch13 - Ayurveda and Medicinal Plants
Ch14 - Indigenous Agriculture, Biotechnology and Nano –technology
Ch15 - Traditional Wisdom of Astronomy
Ch16 - India in Space: A Remarkable Odyssey
Ch17 - Discovery of Gravitational Waves — The Indian Contributions
Ch18 - Discovering Samgamagrama Madhavan
Ch19 - Latest Achievements July 2016 Onwards