The Selfish Gene was published in 1976, not 1989. I read it as a teen in the 90s and it is probably my favourite book of all time.

Also,

Bill Bryson’s “Short History of Nearly Everything”.

Brian Greene’s “The Fabric of the Cosmos” (and all of his other books)

Richard Dawkins’ “The Ancestor’s Tale” and “The Blind Watchmaker” are also amazing.

Fiction:

Adrian Czajkowski‘s “Children of Time” and Orson Scott Card‘s “Ender’s Game” are both anong my favourites.