Most rainforest soils are thin and poor because they lack minerals and because the heat and heavy rainfall destroy most organic matter in the soils within four years of it reaching the forest floor.
The app itself isn't all that complicated and it could have flown through the app review process, so it seems to be a case of the company just not feeling it was a top priority.
Crick's scientific career was delayed by wartime work designing mines, and at the time he was studying for his Ph.D. at Cambridge University and was not supposed to be working on DNA at all.
It's not quite George Jetson's flying car, but a new roadworthy vehicle capable of deploying wings and taking off down the airport runway will bring to mind the familiar cartoon jingle.