Sentence:  Long-lived carbon-14 from the fusion process would <WSD>cause</WSD> four million embryonic , neonatal or childhood deaths and stillbirths over the next 20 generations , and between 200000 and one million human beings now living would have their lives cut short by radiation-produced diseases such as leukemia . 
Meaning of the word marked with <WSD> tags:  give rise to; cause to happen or occur, not always intentionally