Biochar Basics
Soil Health
Climate Benefits
Ecosystem Services
Risks & Challenges
100

This process, involving heating biomass in low oxygen, produces biochar.

What is pyrolysis?

100

Biochar improves this property of soil, making it easier for roots to grow.

What is soil structure?

100

Biochar acts as a vault for this element, locking it in soil for centuries.

What is carbon?

100

Biochar’s porous structure provides habitats for these tiny soil organisms.

What are microbes?

100

Producing biochar requires significant amounts of this, especially if fossil fuels are used.

What is energy?

200

Ancient Amazonian farmers used biochar to create these famously fertile soils.

What is terra preta?

200

Farmers in dry regions benefit from biochar’s ability to retain this.

What is water?

200

Methane and nitrous oxide are examples of these gases reduced by biochar.

What are greenhouse gases?

200

By adsorbing pollutants, biochar improves both soil and this essential resource.

What is water?

200

Dust and particulates from biochar production pose risks to this aspect of human health.

What is respiratory health?

300

Biochar’s porous structure makes it excellent at holding these two essentials for plants.

What are water and nutrients?

300

By boosting nutrient availability, biochar helps increase these agricultural outcomes.

What are crop yields?

300

Integrating biochar into farming systems supports this kind of resilience against climate change.

What is climate resilience?

300

Reducing fertilizer use and runoff helps protect these marine ecosystems downstream.

What are coral reefs?

300

Overuse of biochar can disrupt soil chemistry, including changes in this measure of acidity.

What is pH?

400

Common feedstocks for biochar include wood chips, crop residues, and this farm by‑product.  

What is manure?

400

Biochar strengthens soil by improving aeration and this water‑related property.

What is water retention?

400

Besides CO₂, biochar reduces emissions of these two potent greenhouse gases.

What are methane (CH₄) and nitrous oxide (N₂O)?

400

Biochar reduces nutrient runoff, protecting coral reefs and these aquatic food sources.

What are fisheries?

400

Biochar’s effectiveness varies depending on these two environmental factors.

What are soil type and climate?

500

Biochar is unique because it can remain in soils for this length of time.

What are centuries?

500

Degraded soils benefit from biochar because it helps restore this essential quality.

What is fertility?


500

By storing carbon, biochar contributes to this global effort.

What is climate change mitigation?

500

Biochar boosts soil biodiversity by supporting these microscopic life forms.

What are beneficial microbes?

500

Scaling biochar use faces challenges in sourcing and transporting this raw material.

What is biomass?

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