ants

Rooftop gardens are gaining popularity as cities expand and green, natural habitats decline. University of Dayton biology professor Chelse Prather explores green roofs as habitat for organisms by studying ant communities on rooftop gardens and adjacent ground level habitats in Cincinnati, Dayton and Columbus.

The ants surrounded people at parks, crashed into windshields on the highway, and blocked out the sun as they flew by earlier this month.

Ants in Fiji farm plants and fertilize them with their poop. And they've been doing this for 3 million years, much longer than humans, who began experimenting with farming about 12,000 years ago.