Fish farms feed millions of people around the world, but they also consume a lot of fish that are dried or ground up to make aquafeed. Researchers are developing more sustainable alternatives.
While most corals turn ghostly white when they bleach, some turn neon purple. Scientists were baffled – until now.
Microalgae taste like grass and are packed with nutrients.
Soybean cultivation for animal feed is destroying rainforests across the world. Microalgae may be the Amazon's closest ally.