Complex sentence: Today there are 29 CANDU reactors in use around the world, and 13 "CANDU-derivatives" in India, developed from the CANDU design after India detonated a nuclear bomb in 1974 and Canada stopped nuclear dealings with India.
Split into simpler sentences: Today there are 29 CANDU reactors in use around the world, and 13 "CANDU-derivatives" in India, developed from the CANDU design. After India detonated a nuclear bomb in 1974 Canada stopped nuclear dealings with India.