Book 4 of the Future Boston series
 
Ira and Gray found the egg on an abandoned ferryboat. It was wrinkled, with smears of red and yellow, and bigger than a basketball. They weren’t sure why it was there, only that it must have been left there on purpose.
 
The next day, the egg had grown…
 
Reviews:
 
“Slow Lightning does a remarkable job of conveying the sheer strangeness of the universe and the future.” —Poul Anderson
 
Other Books in this Series:
 
Future Boston
Vubré the Great
In the Cube