I wonder if the billboard can be combined with solar panels so that the electricity required would also be locally generated ? If so, then it is almost like trees, though it does not produce wood, leaves, homes for insects, birds and many other beings.
"Last year, scientists at University of Engineering and Technology (UTEC) in Peru came up with an ingenious billboard that produced drinkable water. Now they’re at it again, this time giving billboards a different superpower: the ability to purify surrounding air.
So how does it work? The billboard sucks in dirty air nearby and filters it through a water-based system, a process that traps 99 percent of the pollutants present. Clean air is then sent back out to the surrounding areas. The filtering system uses 100 percent recyclable water and consumes 2.5Kw of energy per hour...."
For the rest of the article and a video see:
