Albert Einstein said: "If the bee disappeared off the surface of the globe, then man would only have 4 years of life left.
No more bees, no more pollination, no more plants, no more animals, no more man."
In New York City, urban beekeepers fought hard to make rooftop beekeeping legal last year. It is still illegal in 89 cities.
Urban beekeeper David Graves claims the bees are very happy on the rooftops of NYC.
He even sells the honey, raising awareness with every jar.