Once seen as an amusing novelty, Despommier's vertical ... the Apple store on Fifth Avenue. And if you really want to see the advantage, look at the opposite direction. Now we can let trees ...

Vertical farming promises a future in which ... tree which produces all its fruit all at once," says Horler. Most apple trees are already dwarf varieties of wild species, he says, so dwarfing ...

And, says the professor, vertical farming would allow some existing traditional ... Several hours drive north of the city in upstate New York, Ed Miller's 18,000 apple trees are in full bloom. Like ...