Articles on Anaerobic digesters
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Biogas systems that generate cooking gas from plant waste can be relatively low-cost to set up. They come with environmental and health benefits for rural people who have only firewood to cook with.
There are myriad benefits to recycling human waste but our reluctance seems to be based on distaste.
Farmers can help slow climate change by mixing native grasses into croplands, restoring wetlands and raising perennial crops. These strategies also conserve soil and water and build new markets.
Nutrients and energy contained within dead animals are repurposed and repackaged into living, breathing insects.
Energy companies are marketing a new fuel: ‘renewable’ natural gas. But it’s not the same from a climate change perspective as wind or solar energy.
The ‘used water’ that flows from our showers, dishwashers and toilets isn’t a waste to engineers – it contains valuable materials. The challenge is recovering them and turning them into products.





