Weeds growing in sidewalk cracks — a very common sight. Think of how much money and time would be saved if one engineer would invent some kind of flexible, strong and long‐lasting caulk that could go in the cracks…
- Time spent replacing broken and eroded concrete would be lessened.
- Time spent removing the weeds would be prevented.
- Money spent funding workers to do both would be saved.
So come on, engineers, find an investor and go for it!