
It’s well known that trees benefit the environment by taking in carbon dioxide and releasing oxygen into the atmosphere through the complex process of photosynthesis. However, recent research indicates another way that trees are beneficial to life. Tree bark is home to over 1000 microbial species that help to eliminate methane, hydrogen, and carbon monoxide from the atmosphere.
There has been much concern about the greenhouse effect produced by carbon dioxide in the atmosphere. Often overlooked is the fact that the greenhouse effect of methane is many times more potent than that of carbon dioxide, and methane is produced by many natural sources, such as decomposing organic matter. Also, carbon monoxide produced by incomplete combustion is deadly for humans, and many of us have carbon monoxide detectors in our homes because of that. Hydrogen, along with carbon monoxide, apparently helps methane remain longer in the atmosphere. Therefore, removing carbon dioxide, carbon monoxide, methane, and hydrogen from the atmosphere can reduce the greenhouse effect.
Researchers studied flooded lowlands in the Amazon region, where microbes living in lake and wetland sediments produce methane. When they measured the amount of methane bubbling up and compared that to methane data acquired by satellites, they were surprised. The satellite data indicated only half as much methane as predicted by ground-based measurements. The research showed that methane levels were reduced because microbes in tree bark oxidized methane. They also found that microbes in the tree bark oxidize hydrogen and carbon monoxide from the air. This shows another way that trees are beneficial to life.
The researchers found that different tree species had distinct microbial communities in their bark. Further study is needed to understand which tree species are most beneficial to the atmosphere. Previous research has found that tree trunks harbor many beneficial microbes. The bottom line is that trees are beneficial to life. In addition to being good for the environment, they are beautiful and beneficial for people’s emotional well-being. The more we learn about the design in the natural world, the more we are amazed by how God has given us exactly what we need for a living environment. It is up to us to enjoy and protect what God has provided.
— Roland Earnst © 2026
Reference: Science News magazine for March 2026, pages 22-23, and sciencenews.org









