Algae Solutions to Human Problems

When you hear the word algae, negative thoughts may come to your mind. You may have problems with algae growths in your pond or birdbath. You have heard about toxic algal blooms that have hit seafood industries on the Pacific Coast. Many of us have viewed the red tide in Florida first hand. There are lawsuits in progress against companies that allowed chemical runoffs to trigger the destructive growth of algae in lakes and the ocean causing economic hardship for fishing trades and seafood producers. Unlike human-caused algae problems, there is a promise of algae solutions to human problems.

Consider the following facts:

Algae is probably our best tool for reducing greenhouse gases. Algae take carbon dioxide from the air and produce oxygen. More than half of the oxygen in Earth’s atmosphere comes from converting carbon dioxide to oxygen and algae is the primary agent for doing that. There is good evidence that excessive algae growth in the past caused global cooling.

Phytoplankton algae grow world-wide and make up the base of aquatic food-chains, eventually leading to most of the seafood we eat.

Giant kelp, which are algae, provide food and protected ecosystems for ocean creatures.

Cyanobacteria, also known as blue-green algae, such as spirulina contain proteins, vitamins, minerals, and essential fatty acids. People in many countries have been harvesting spirulina for nutrition since the 1940s. Japanese cooks use algae in soups and sushi wrappers. The additives agar and carrageenan from algae are used in ice cream and jellies.

Symbiotic relationships exist between algae and coral, helping to prevent storm damage to coral reefs that house sea life and protect shoreline structures. Algae solutions to human problems are many.

Research continues into how we can use algae to produce fuel. New foods made of algae are being developed. Most recently sea grapes, which are algae, have been used as green caviar because their texture and appearance looks like caviar and they are very nutritious.

God has provided for us in so many ways that it has taken our entire human history to discover them. For many years people did not eat tomatoes because they were considered to be poisonous. That seems silly to us today when whole industries are built around the tomato. In the future, perhaps we can say the same of algae. These rootless, leafless plants have incredible potential to provide algae solutions to human problems both here on Earth and as we travel into outer space.
— John N. Clayton © 2019

Reference: Science Digest, July 2019