Of hemp's many uses, one of the most promising could be in construction


Hempcrete is made from the dried core of hemp stalks and a lime-based binder and can be cast into blocks and panels just like concrete. But unlike concrete, which emits CO2, hempcrete actually absorbs it while also reducing construction waste. Though not strong enough to be load bearing, it has outperformed other materials in terms of insulation, and is therefore an ecofriendly option for covering walls. Reducing the need for air conditioners in warm climates limits CO2 emissions even more. Hempcrete has been used to build new structures and retrofit existing ones in Europe and Australia.

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