When certain fuels are combusted, it leaves a fine, powdery substance byproduct called ash. Two common forms of this type of waste are coal

Earth & I’s exclusive interview with Master Herbalist David Christopher on why he thinks eating whole foods is the best long-term medicine

“Biocrusts” are microbial communities that live in open areas on the soil surface and partially within the soil of arid and semi-arid condit

Permaculture is not just a set of agricultural techniques but a philosophy of working with nature.

The following article is the 2nd part of Prof. David MacMillan’s keynote presentation, entitled “New Catalytic Strategies for a Sustainable