Seaweed farms have the capacity to grow huge amounts of nutrient-rich food, and oysters can act as an efficient carbon and nitrogen sink.
Fuel From Food
Increasingly, cities are asking their citizens to compost, but why? In times past, that organic stuff was just mixed in with the trash and allowed to biodegrade in the landfills. What's done with all of those orange peels, dried out egg shells, and lawn trimmings?
Mostly, it's mixed with soil and used in agriculture, just as it's been done on small farms for generations.
But what if you were to capture that methane and put it to use? A company in Massachusetts is doing just that, taking our waste and converting it into biofuels.
Another company uses GM organisms to convert waste into fuel. It has already converted a corn ethanol facility into one that converts waste into fuel.
Are we on to something? It's definitely a way to cut down on landfill trash. And it's sustainable.
When we compost materials rather than put them in landfills, we cut down on greenhouse gases, because methane is released as the trash decomposes. Methane, it should be noted, is also ten times wore than CO2.
The methane is also wasted fuel. (Wasted unless it's collected and converted into cleaner fuel, at the landfill, which is what Waste Management does--the company gathers enough fuel for 400,000 homes).
Maybe it's time for more cities to compost? Biofuels don't necessarily have to come from corn and other goods from our fuel supply--after all, they were able to fly a jet across the ocean on a 50-50 mixture non-corn biofuel and traditional jet fuel.