In Our Hands the Stars
In Our Hands the Stars is also known as The Daleth Effect.
Top Israeli scientist, Arnie Klein, "defects" to Denmark in order to protect his discovery, the secret of simple, economic space travel by use of the "Daleth effect". He wishes to develop the idea without it falling into the hands of the military, since it also has potential as a weapon. But he is forced to reveal his secret to the world when the Daleth effect unit is fitted to a submarine which is sent into space to rescue two stranded Soviet cosmonauts.
Klein and his friends are then subjected to all kinds of international pressure from people wanting the secret.
This is a novel about the misuse of scientific discovery, and was listed by Stanley Schmidt as one of the "10 SF Books For Scientists".
Harry Harrison
Harry Harrison (born Henry Maxwell Dempsey, 1925–2012) was an American science fiction (SF) author, best known for his character the Stainless Steel Rat and for his novel Make Room! Make Room! (1966). The latter was the rough basis for the motion picture Soylent Green (1973). Harrison was (with Brian Aldiss) the co-president of the Birmingham Science Fiction Group.
Aldiss called him "a constant peer and great family friend". His friend Michael Carroll said, "Imagine Pirates of the Caribbean or Raiders of the Lost Ark, and picture them as science-fiction novels. They're rip-roaring adventures, but they're stories with a lot of heart."