Aliens Use Bio-Computers
These aliens were focused on biology very early in their technological development. Once they discovered DNA, they quickly used DNA to store data. They then used the DNA and "programmed" it for almost all of their manufacturing (medicine, food, building materials) and computing needs.
These aliens only created enough silicon and metal technology in order to interface with the micro-scale of the cell.
Consequently, their planet's environment is still pristine. Their climate is solidly intact and stable.
SUBMITTED BY: Tony McCaffrey, email@example.com