The Ophiuchi Hotline (Unabridged)
The invaders came in 2050...they did not kill anyone outright. They said they came on behalf of the intelligent species of Earth - dolphins and whales. The invaders quietly destroyed every evidence of technology, then peacefully departed, leaving behind plowed ground and sprouting seeds. In the next two years, 10 billion humans starved to death.
The remnants of humanity that survived relocated to the moon and other planets. But they are not alone in their struggle - someone or something, somewhere deep in space, is sending them advanced scientific data via the Ophiuchi Hotline. And by the 25th century, the technological gifts from the hotline - especially its biological and medical solutions - have created a world unlike any ever known or imagined.
One of my favorite John Varley books!
Way back, in the day, when I first discovered the Gaea trilogy (Titan, Wizard, Demon), I saw that Varley wrote this The Ophiuchi Hotline and I went looking for it. This was pre Internet. If you wanted to find a rare or out of print book, you went to dusty bookstores (where NOTHING is alphabetized) and spent hours looking. To this day, I still think of that as a fun way to kill a couple of hours. My wife thinks I'm crazy and it took me YEARS to find this one. It was worth the wait. Truely, one of Varley's best and at his worst, he's still one of the best writers every. Truely a great story.