trees Archives

November 13, 2025November 11, 2025

Inside a Tree Trunk

There is so much about the everyday things in our lives that we don’t understand. When we see a tree, we have no idea what lives inside that tree’s trunk. Recent studies by scientists have found that inside a tree trunk there are entire communities of bacteria. A single mature tree hosts about one trillion bacteria, with different communities living in various layers.

What is especially remarkable is that some of the bacteria living deep inside a tree trunk are anaerobic, meaning they don’t need oxygen and produce methane. The outer layers of wood may absorb some of the methane, but more research is needed on that. The study’s lead author said that the inside of a tree trunk is more like a wetland, where anaerobic bacteria and methane producers thrive in low-oxygen environments.

Poets like Robert Frost and Joyce Kilmer have written famous poems about trees. While we admire the beauty of a tree and enjoy its leaves and their fall colors when they lose chlorophyll and turn vibrant, we often don’t think about what it takes to create them. In a desert, humans seek an oasis where conditions permit trees to grow. Most of the time, we take trees for granted and never consider what’s inside a tree trunk.

Genesis 1:12 tells us that God formed trees (the Hebrew word “ets”) as a special creation, separate from grasses or gymnosperms. That simple statement hides how complex it really is to make a tree trunk. As Romans 1:12 states, “We can know there is a God through the things He has made,” and the trees we see in our yard or garden demonstrate how much intelligence is needed to create a simple piece of wood.

Reference: Scientific American, November 2025, pages 20-21.

September 9, 2025September 8, 2025

Microbiomes in Living Tree Trunks

A study of microbiomes in living tree trunks reveals that the woody tissues of trees contain a trillion microbial cells in addition to the actual tree cells. This includes single-celled bacteria and archaea, which are specialized for different parts of the tree and for various tree species.

The research team, led by Jonathan Gewirtzman of Yale University, studied more than 150 trees across 16 species in the northeastern United States. The trees examined included red maples, black birches, and white ashes. They discovered that microbes can live in both the outer sapwood and the inner heartwood, with each region hosting its own microbiome. Sapwood is mainly inhabited by microbes that require oxygen, while heartwood contains anaerobic microbes.

The study shows that microbiomes in living tree trunks vary from species to species. But how do these microbes get inside the trees? It might happen through wounds or openings, or they could be passed through the tree’s seeds. Perhaps, there is another route scientists have yet to discover. Regardless of the method, Gewirtzman explains, “What looks like one thing is a trillion-in-one organisms living together.”

When you see a tree, you might not realize how intricate its design is. Genesis 1:11-12 states, “Then God said, ‘Let the land produce vegetation: seed-bearing plants and trees on the land that bear fruit with seed in it, according to their various kinds,’ and it was so. The land produced vegetation: plants bearing seeds according to their kinds and trees bearing fruit with seeds in it according to their kinds.”

Like many other living things, scientists are only beginning to understand the complexity of microbiomes in living tree trunks. We can recognize that there is a God through the things He has made, including trees. (See Romans 1:20.)

Reference: dnyuz.com

May 26, 2022May 25, 2022

A Poem Lovely as a Tree

In 1913 poet and journalist Joyce Kilmer wrote his best-known poem simply titled “Trees.” It begins with, “I think that I shall never see, A poem lovely as a tree.” In fact, poems and trees have one thing in common. They are hard to define. What one person considers poetry could be something very different to another. The same is true of a tree. How can we define a tree?

There is no universally accepted common or scientific definition of a tree. Scientists classify all plants and animals into categories such as family, genus, and species. But trees, in general, don’t fit into any of those categories. You can assign any of those labels to a specific tree, but you can’t fit all trees into one specific classification. The best you can do is say that all trees are in the plant kingdom.

Even the common concept of a tree is a bit vague. You could say that a tree is a tall, woody plant with branches, leaves, bark, and a trunk that shows rings when you cut it down. That means what we call “palm trees” are not trees. Neither are banana trees, papaya trees, or Joshua trees. Also, bamboo is a plant that can grow to heights that exceed many trees, but we classify bamboo as grass. Many woody plants that we call shrubs or bushes can grow as tall as a height. How tall does a bush have to grow before we call it a tree?

No matter how you define trees, consider the benefits they give us. From trees, we get wood for furniture, homes, and buildings. We get fuel for campfires and even heating homes. Without the wood from trees, our ancestors could not have built boats and wagons that allowed them to travel, explore, and spread around the world. Trees provide shade, protection from wind, and in many cases, fruit. They can live for decades, centuries, or even thousands of years, releasing oxygen and taking in carbon dioxide to reduce Earth’s greenhouse effect. We will never find a poem lovely as a tree in spring, summer, or fall.

In Genesis, we read about the progressive steps of creation as God placed on Earth first grasses, then plants bearing seeds, and then trees bearing fruit that was good to eat (Genesis 1:11-12). God told the first couple to enjoy the fruit of all the trees except one. The beauty of the paradise where God placed Adam and Eve must have been beyond description. However, the tragedy that came because of the sin of pride and disobedience did not completely destroy that beauty. A glimpse of it has remained for us to enjoy, and it inspired Joyce Kilmer to write those words, “I think that I shall never see, A poem lovely as a tree.”

No matter how you define trees, we could not live without them. Kilmer’s poem ends with, “Poems are made by fools like me, But only God can make a tree.” God made the trees, and it was on a tree that He made the ultimate sacrifice for the sin that began with Adam and Eve. (See I Peter 2:21-24.) Sin has marred the beauty of the world and our lives as well. However, God has provided the solution–if we are willing to accept it.

May 7, 2022May 6, 2022

How Do Plants Communicate?

People communicate with each other through spoken and written words and actions. We also know that animals communicate by using sounds and movements. However, we may not be aware that plants talk to each other. They don’t do it by speech, writing, sounds, or movements. Since they are stationary and silent, how do plants communicate?

Plants are continuously engaging with other plants in their environment, mostly underground. For example, the roots of most plants host fungi, and working together, the plant roots and the fungi create underground structures called mycorrhizae. These mycorrhizae resemble a web system surrounding the plant’s roots, helping the plant absorb nutrients such as nitrogen and phosphorus in a symbiotic relationship. As the mycorrhizae help the roots absorb essential nutrients and water, the plant uses photosynthesis to produce sugars which it shares with the fungi.

But how do plants communicate? The mycorrhizae can connect multiple plants into a network through which they can share energy and information. This web creates a fine-tuned community-wide sharing system. Through this communication channel, plants can pass defensive chemicals to protect against insects. When pests such as aphids attack a plant, it can send a message to its neighbors so they can preemptively activate defense responses. In this way, mycorrhizae enable a system of cooperation between plants.

However, when resources such as light or nutrients are scarce, a plant can limit its mycorrhizae connections and avoid making new ones. Then when resources are good, they can restore their sharing network and even make new connections. When the plants connected in the mycorrhizae network are closely related, they share more than if their neighbors are not close relatives. Trees use these fungal networks to communicate and share but also sometimes to sabotage their rivals. Plants determine when to share and when to maintain their independence.

As we investigate the question, “How do plants communicate?” we realize that they behave as humans often do, putting their own interests first. Yet, sharing and working together is part of God’s design for life, and humans should always follow the example set by Jesus in His life and teaching. (See Matthew 5:38-48 and 25:31-46.)

Reference: The Conversation

July 22, 2021July 17, 2021

Evidence of Climate Change

My son-in-law and his family moved to Vancouver, Washington, in 2020. His wife grew up in Thailand, where the weather was hot and humid. I told her that when she got to Vancouver, she would have a completely different climate experience. I explained that the Pacific Current along the coast brings cold water from Alaska while the wind brings cool air and lots of rain to the Portland/Vancouver area. How could I have guessed that the summer of 2021 would prove me wrong and give more evidence of climate change?

June 27, 2021, was the hottest day ever recorded in Oregon, with temperatures reaching 112 degrees in the Portland area. Air conditioners are usually rare commodities in that part of the country, and even fans are not very common. Because the weather was so unusual, people were ill-equipped to deal with that kind of heat, and many people died. My son-in-law had brought an Indiana exhaust fan, so they were not comfortable but able to survive.

This was not just a freak heatwave. Climate change in the western third of this country is causing all kinds of problems. Lake Powell, on which we have spent many happy hours, is at 20% of its maximum capacity. Lake Mead near Las Vegas is 160 feet below its full level. People living in areas like the U.S. midwest don’t understand that this is a real crisis for people who live in the desert southwest. Many cities get their water from these lakes, Likewise, farms. Farmers irrigate their vineyards and orchards with water from those lakes.

The drought is evidence of climate change producing tinderbox conditions in the forests of the western region. From July 24 through December 31 of 2020, more than 100 fires burned over 10 million acres causing 20 billion dollars in damage to man-made structures. The heat even caused highways to buckle.

Those who try to deny the evidence of climate change are setting the world up for a catastrophic future. This is not something that God has done to punish us. However, it is the result of careless use of the resources God has given us. It is time to stop arguing and start fixing the problem. Moving water from places where there is too much to areas that are in drought is an expensive option. Planting massive numbers of trees is an option worth trying. Standing around in 115-degree heat and trying to deny the climate is changing is not an option.

Reference: The Herald Bulletin, July 3, 2021.

July 9, 2021July 7, 2021

God’s Solution for Climate Change

It is becoming more and more difficult for the naysayers to deny that we are facing climate change. Some areas are experiencing too much rain, while others are facing catastrophic drought. It is hard to miss the changes in ocean temperatures and how that is affecting ocean life. People have offered all kinds of solutions to stop or reverse what is going on in the world’s climate, but the solutions are expensive and unproven. Perhaps we need to turn to God’s solution for climate change.

Science News published an extensive series of reports under the title “Can Trees Save the World.” The subject matter is broken into three major topics: (1) The Promise and Pitfall of Trees (2) First, Protect Today’s Forests (3) The Forested Farms of the Future. The articles point out the many things trees do to provide climates in which humans can survive.

For example, trees capture and sequester carbon, break up the soil, and inject nutrients into all kinds of soils. Trees provide food for a wide variety of life forms, including humans. Those food sources include fruit, fungus, and plant materials. The report gives an encouraging message of how trees can change the climate situation that threatens humans today,

It is worth noting that according to the Genesis account, the first form of life God created was plants (Genesis 1:11). This was before He established the Sun and Moon as controllers of “signs and for seasons and for days and for years.” The sequence of plants in these verses is “deshe” (grasses), “eseb” (herbs – gymnosperms), and finally “ets peri zera” (tree yielding fruit whose seed is in itself).

Scientific evidence shows that plants were major factors in producing a climate that would allow humans to exist. It seems that correcting our climate problems should involve repeating what God used initially to prepare the planet for human life. We need to turn to God’s solution for climate change.

Reference: Science News for July 3/July 17, 2021, pages 19 -35.

May 13, 2021May 11, 2021

Trees Can Slow Global Warming

Anyone who has read valid scientific studies must be aware that there is massive evidence that the planet is facing climate change. Politicians are proposing all kinds of elaborate and expensive solutions. The fact is that God has given us a solution that goes back to Genesis 1:11-12. “And God said, ‘Let the land produce vegetation: seed-bearing plants and trees…and God saw that it was good.’” Trees can slow global warming.

In Liuzhou, China, Italian architect and urban planner Stefano Boeri is helping to develop the world’s first “forest city.” Nearly a million plants are being used to cover parks, schools, offices, and apartments. People in Louisville, Kentucky, are working on a similar plan called The Green Heart Project, with 14.5 million dollars to plant 10,000 trees. Louisville has had some health issues with high pollution levels and high rates of cardiovascular disease. The Green Heart Project began in 2018 directed by Eruni Bhatnagar of the Christina Lee Brown Envirome Institute at the University of Louisville. Similar studies and projects are underway at Murray State University, Arizona State University, Washington University in St. Louis, St. Lawrence University, Yale, Stanford, and Johns Hopkins.

Most of us are aware that trees take in carbon dioxide and release oxygen, but the idea of planting trees and other forms of vegetation in urban areas is relatively new. In 2014, Italian developers completed the Bosco Verticale, which is Italian for vertical forest. They built a double skyscraper to hold 800 trees, 15,000 perennials, and 5,000 shrubs that spill over terraces. Dozens of studies have shown that people living near green spaces have lower stress levels, lower asthma rates, and fewer cardiovascular and respiratory tract illnesses.

When the Genesis account was written, there were no problems with carbon emissions and pollution, but even then, God was giving us a key to health. Rather than causing enormous energy costs and damaging our economy, trees can slow global warming, so let’s plant massive numbers of trees.

October 2, 2020October 1, 2020

Recycling Enables the Natural Beauty

I have lived my entire life in the woodlands of North America. I love walking through the vast areas of pines, birches, maples, oaks, blueberries, ferns, mosses, aspens, and raspberries. To me, it is pure joy to sit in the woods or in a boat on a lake or river and listen to the sounds of nature. I especially enjoy the fall when the colors become vivid, and animal life is in a rush to prepare for winter. The falling of leaves to the ground, followed by frost and snow, adds its own magic to the joy of being in the woods. Recycling enables the natural beauty we enjoy.

What we are seldom aware of is the massive amounts of waste produced in the woods. We all know about leaves and probably have had some cruel words about them when they cover our lawns. The fact is that a constant rain of organic material falls to the floor of the woods. Limbs, bark, twigs, dead grass, moss, sawdust, animal excrement, and carcasses pile up year after year. Yet when you walk in the woods, the floor is made up of a thin, spongy layer of black soil. What happens to the massive amount of debris that falls to the forest floor every year?

The answer to this question is under-appreciated by most of us. Recycling enables the natural beauty of the woods. God has built into the forest an incredibly efficient recycling system. When something organic falls to the forest floor, it is swarmed on by bacteria, termites, ants, fungi, and worms, which form the basis of the food chain for higher forms of life. Nutrients in the woods seldom last longer than a few weeks at the most. Rain is moderate and percolates through these nutrients, rapidly helping them find their way back into the forest’s living tissues.

Those places where there are not dense forests have a completely different system of recycling. In the far north, where forests are not dominant, migrating salmon provide the ecological balance needed. In desert areas, the lack of ecological balance means that life for humans is difficult at best. Human survival depends on God’s recycling system. In some areas of the rich farmlands of America, we can measure the soil in feet. That allows us to grow our grain crops that sustain our existence, but those areas were built in an ancient forest.

God told us to take care of what He gave us. (See Genesis 2:15.) One part of caring for the Earth is to copy God’s recycling techniques. Recycling enables the natural beauty by replenishing the nutrients we take from the soil rather than polluting the air by burning them or polluting the ground by bagging in plastic and burying them.

December 1, 2019November 25, 2019

Trees Prepare for Winter

Imagine standing naked outside on a cold winter day. When winter’s chill comes, people take shelter. If we have to be out, we put on more clothing. Most animals have fur or feathers to help keep them warm, and they also seek shelter from the cold. Trees in winter can only stand there and take it for months at a time. So how do trees prepare for winter?

Living cells in plants or animals consist primarily of water inside a membrane. If you leave a bottle of water in your car on a night when the temperature drops below freezing, you know it will freeze and break the bottle. That is because water has the unique property of expanding as it freezes. The same thing can happen in living cells. If the water in the cell freezes, it will expand and rupture the membrane. Animals that are endothermic (warm-blooded) generate heat within their cells by burning sugar to produce energy. Plants make sugar using light energy. With a few exceptions, they don’t produce heat.

How do trees prepare for winter? They use a process botanists refer to as “hardening.” The cell walls become more permeable to allow water to escape. At the same time, sugars, proteins, and acids in the cell are concentrated into a syrupy liquid, which acts as an antifreeze. The spaces between the cell walls become filled with ultra-pure water filtered through the cell walls. Pure water without stray atoms to form a nucleus around which ice crystals can grow, will freeze only at a much lower temperature. With the cells filled with antifreeze and spaces between having only ultra-pure water that can be super-cooled without freezing, the tree is ready for what the winter brings.

How does the tree know that it’s time to harden for winter? Fall weather can fluctuate quickly and dramatically. A tree can’t depend on the fickle weather because it could easily be fooled by warm days that suddenly turn cold, causing it to freeze to death. Trees know when to prepare for winter because of the length of the days – the “photoperiod.” Weather is unpredictable. The Sun is absolutely dependable. When the tree senses a decrease in light in each 24-hour cycle, it knows winter is coming, even if the weather is unusually warm. The pattern of changing daylight and darkness is exactly the same every year, even though the weather is capricious.

God engineered this incredibly well-designed system. “Then God said, ‘Let there be lights in the expanse of the sky to separate the day from the night. They will serve as signs for seasons and for days and for years’” (Genesis 1:14). Thus God designed the system which says, “Trees prepare for winter.” It’s another engineering marvel from the Creator.

July 8, 2019July 14, 2019

Seeds Are Alive

Seeds Are Alive When you walk into the forest and look up at the trees, it’s easy to realize that all of those structures towering over your head are alive. What you may not think about is that their seeds under your feet are alive also.

Many trees produce seeds to grow new trees. There are maple seeds with their familiar “helicopter” method of blowing in the wind. There are cottonwood seeds that look like “summer snow.” Those seeds and others are carried far away by the wind.

Oak trees produce seeds we call acorns. They’re too heavy for the wind to scatter them, so that’s the job of squirrels. Squirrels gather acorns and store them to eat later. When later comes, the squirrels have often forgotten where they stored their treasure. Instead of being eaten, the acorns grow into new trees to produce more acorns. Both the trees and the squirrels benefit from that arrangement.

The seed of a coconut tree is the coconut. The wind can’t blow coconuts around, and squirrels can’t carry them. They often grow near water, such as a stream or an ocean. A coconut falling into the sea can float to an island thousands of miles away, where it can take root and grow. Cherry trees produce their fruit with a seed we often call a pit. Birds eat the cherries and drop the seeds over a wide area.

The key to a seed beginning to grow is the breaking of the shell surrounding it. Many things can cause that to happen, such as moisture, temperature, fire, mechanical abrasion, or a combination of methods. Some seeds have to travel through the digestive system of birds or animals for them to begin to grow into a new plant.

Most seeds wait a year before they start to grow. Cherry seeds can wait for hundreds of years. Scientists discovered a lotus seed (Nelumbo nucifer) in a bog in China. They cracked the shell and started it growing. When they carbon-dated the shell, they found that the seed had been waiting for 2,000 years to sprout into a lotus plant.

Seeds are alive, waiting in dormancy to grow into what God created them to be. The amazing quality of life shows design by intelligence, not chance.
— Roland Earnst © 2019