Video coming soon
Agriculture
Algae
Could Pond Scum Save the Planet?
Long before animals appeared, ancient algae helped transform Earth, releasing oxygen that made complex life possible. Billions of years later, their descendants could help save the planet. Today, microalgae and seaweed are being developed for food, animal feed, fuels, fertilizers, plastics and even carbon removal. Algae can grow quickly without farmland and absorb nutrients from water, but scaling them sustainably is not simple. From microscopic cells to giant kelp forests, this overlooked world is full of possibility.
(Illustrated guide coming soon)
2.2overall
How this solution scores
- Impact2 / 5Promising for feed, fuel and materials, but large-scale climate benefit is unproven.
- Speed2 / 5Grows fast, but farms, processing and markets take years to build.
- Cost2 / 5Growing algae for feed, fuel or materials is still costly.
- Readiness2 / 5Seaweed food is established, but climate uses are mostly pilots.
- Nature3 / 5Needs no farmland or freshwater.
