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Global food prices will more than double within 20 years as a new age of crisis forces the collapse of our broken global food system, said Oxfam today. The international development agency said Europe is sleepwalking as the world enters into an unprecedented and avoidable reversal in human development.

Ohio still has too few farmers markets and community agriculture ventures to serve its population, according to a recent index developed by Strolling of the Heifers, a nonprofit organization in Vermont that is trying to save family farms.

Given how valuable space is in New York City, the city's rooftops are strangely empty. But a proposal from the city's planning department could change that by making 1,200 acres of commercial rooftops available for urban farmers to open greenhouses across the city. City law imposes restrictions on how tall buildings are allowed to be in different areas, which is one reasons why rooftops stay empty - developers often build to the maximum height possible. The planning department's proposal would allow buildings to add rooftop greenhouses above regular height restrictions. And according to a study from the Urban Design Lab, that would mean 1,200 acres of empty, flat rooftops would be eligible for green penthouses. Besides the promise of fresh, city-grown vegetables (and fresh city-grown jobs), creating greenhouses up on these roofs has another benefit for New York. Rooftop greenhouses will be required to incorporate rainwater collection and reuse systems, which will help the city mitigate the pressure that big rainstorms puts on the sewer system.