Possible project ideas for effect of trees on humans - phytoncides

 An interesting process happens with trees and forests. Trees emit chemicals called phytoncides. When we breathe it in, it goes into the bloodstream and has remarkable effects on our bodies and health - phytoncide activates our immune system to produce more white blood cells of the natural killer (NK) variety. These can hunt down stress hormones, destroy virus-infected cells, and go after cancer cells in tumors!

Scientists have measured around a 50% increase in anti-cancer proteins after just a few hours hiking and being in forests, and this increase lasts nearly one month. Forest air lowers cortisol, blood pressure, and helps one de-stress by helping activate the parasympathetic nervous system. Fascinating! Again and again, we find Nature provides everything we need for good health, if we just recognize and accept it, and take advantage of the cycles that exist today through evolution. Life evolved that best fits into the natural environment and ecosystems that exist on earth, and forests are a big part of this. 

For research, the first thought that I had with this information is to do studies of cancer rates (overall and specific types) dependent on where people live - rural vs suburban vs urban. And break it down to longtime residents near or in forest compared to longtime residents living in desert environments and urban environments, etc. Are there statistically significant differences between cancer rates, blood pressure conditions, stress related issues, and so on? This is a challenging study to do since there are SO MANY possible factors that affect health that need to be considered - we would need to learn how statistics helps do this for complex systems and studies, but it could also help guide health policy and recommendations for different regions of the country. 

Just putting this out there! Physical experiments can also be done on any variety of plants, investigating what chemicals are released to their surroundings and if any of them are beneficial to human health. 

Scientists start new climate website as a nonprofit!

Good news for science, and more importantly, the world - scientists who were fired from NOAA, which is the National Oceanic and Atmospheric Administration have replaced the dismantled climate.gov site with a new climate.us site. The current administration, who openly and often calls climate change a "hoax", and has cut funding and fired some of the world's best climate scientists for political reasons, has put a massive obstacle in the way of nearly the entire rest of the world when it comes to doing something about climate change. We should be thankful to the actual scientists and experts in the field for doing this as a nonprofit, and mostly as on a volunteer basis! 

GO TO CLIMATE.US for all sorts of data, analyses, and discussions of what's going on with the planet!

Multidisciplinary Research Idea: Modeling plants with Fractals and Computational methods

 Many years ago, I had a student investigate plant growth computationally using fractals. But he was also interested trying to develop and model environmental conditions to see if he could then model what effect(s) different environmental conditions would have on different plants and their structures. It is a challenging problem! 

But it got me thinking since a lot has happened in such an area of study, and it is more important as climate change continues to change conditions around the world. I went to ChatGPT to get some ideas on this, and at the end are some initial ideas for high school project ideas: 

Prompt: Is it possible to accurately model different types of plants using fractals? 

ChatGPT: 

Yes—up to a point. Fractals are remarkably good at modeling many aspects of plant growth because plants often exhibit self-similarity, where a structure repeats at different scales. However, no fractal model can perfectly capture all the biological complexity of a real plant.

Why fractals work well for plants

Many plants grow through repeated branching processes:

• Tree trunks branch into limbs, then branches, then twigs.

• Fern leaves contain smaller leaflets that resemble the entire leaf.

• Root systems often exhibit branching patterns similar to the above-ground structure.

• Vein networks in leaves can display fractal-like organization.

Because of this repeated geometry, fractal mathematics can reproduce many plant forms surprisingly well.

Examples of fractal plant models

1. L-Systems (Lindenmayer Systems)

Developed by Aristid Lindenmayer in the 1960s, L-systems use simple growth rules that are repeatedly applied.

For example:

• A stem grows.

• The stem splits into two branches.

• Each branch repeats the same rule.

After many iterations, realistic trees, shrubs, and ferns emerge.

Many computer-generated forests in movies and video games use L-systems.

2. Iterated Function Systems (IFS)

These use geometric transformations:

• Scale

• Rotate

• Translate

Repeated thousands of times, they can create realistic-looking:

• Ferns

• Pine trees

• Bushes

The famous Barnsley Fern is generated from only a few mathematical equations.

3. Fractal Dimension Analysis

Scientists use fractal dimensions to quantify plant structure.

For example:

• A simple line has dimension 1.

• A flat surface has dimension 2.

• A highly branched tree may have a fractal dimension between 1 and 2.

Different species often have characteristic fractal dimensions that correlate with:

• Light capture efficiency

• Water transport

• Growth strategies

For a high school research project

This is actually a rich area for student research. One could:

1. Photograph different tree species.

2. Use image analysis software.

3. Calculate the fractal dimension of each branching pattern.

4. Compare species.

5. Investigate whether fractal dimension correlates with:

• Growth rate

• Shade tolerance

• Leaf area

• Habitat

This would combine mathematics, biology, computer science, and physics into a genuine research study.

MAY THE 4th BE WITH YOU...ALWAYS!!

  MAY THE 4th BE WITH YOU...ALWAYS!! 

Science Talent Search Finalists for 2026

 Congratulations to the Finalists in the 2026 Regeneron Science Talent Search! Check out the site to find inspiration, possibilities, and even research ideas for yourself or your students. This is the highest level possible for high school science research, so enjoy and celebrate! 

First possible signs of other life on exoplanets...

  In my classes, over the past two weeks, the topic of other life in the universe became a topic everyone is interested in. Students asked for my opinion, and I don't hesitate in telling them that for me, and most serious scientists I know in all fields, I would be shocked if there WASN'T simple life all over the place throughout this universe! I'm talking bacterial or single-cell type life. Now, 'intelligent' - or I use the term 'complex' - life, like us or animals or plants, that is a different story that I don't think anyone has a good grasp of. This is because complex life requires hundreds of millions of years for evolution to do its thing, and that then requires very long periods of time of relative stability, which does not happen for most stars and planets, so that will be a much more challenging thing to wrap our heads around. 

But bacterial type life? We estimated there could be some hundred billion trillion planets in the observable universe! And already many exoplanets have been observed in 'Goldilock's zones where there can be liquid water and other chemicals necessary for life (as we know it). The ingredients for life are all over the place when astronomers look, including water everywhere and even amino acids floating around! If there is any level of environmental and planetary stability for relatively short periods of time, simple life would have a chance to natur ally evolve from basic organic chemistry. If interested in this type of research, check out astrobiology. 

Below is a snippet I found about the first potential evidence suggesting there could be other life on exoplanets: 

James Webb Space Telescope has just delivered the strongest hint yet of alien life! Scientists studying the distant exoplanet K2-18 b (about 120 light-years away in the constellation Leo) have detected methane, carbon dioxide, and a possible trace of dimethyl sulfide (DMS)—a molecule that, on Earth, is produced almost exclusively by living organisms such as marine plankton.

K2-18 b sits comfortably in the habitable zone of its star and may be a vast ocean-covered “Hycean world,” a type of planet scientists believe could host microbial life beneath a hydrogen-rich atmosphere. The discovery was made by analyzing the planet’s atmosphere as starlight passed through it during a transit, allowing researchers to identify its chemical fingerprints.

While scientists stress that this is not yet definitive proof of life, the presence of these molecules together makes K2-18 b one of the most compelling candidates ever found for extraterrestrial biology. Future observations by the James Webb Space Telescope will attempt to confirm whether the dimethyl sulfide signal is real and determine if biological processes could truly be responsible.

If confirmed, this discovery could mark the first real evidence that life exists beyond Earth, a finding that would forever change our understanding of the universe and our place within it.

                                         From viewspace.org. 

Still figuring out Special Relativity 120 years after its publication! Science never stops learning

 In my classes, we get into length contraction when it comes to Einstein's special theory of relativity. When objects move, their lengths shorten up by some amount in the direction of motion. This is a well-known conclusion from relativity. It is also really challenging to try and measure this at everyday speeds, because the length contraction is so tiny; not until a substantial fraction of the speed of light will it become more measurable. 

However, it turns out that what we would actually see is surprising and different from just a meter stick being a little shorter. We would see the stick, as a stationary observer with the stick flying past us really fast, rotate by some amount! This has to do with the behavior and tiny time differences of photons coming from the stick and reaching our sensors; it was calculated by two scientists about 20 years ago, and is called the Terrell-Penrose Effect. 

Now, with crazy-fast electronics and video technologies, this has actually been observed, and the real relativistic prediction confirmed, in the lab! This is a good Scientific American article, with some visuals, as to what it looks like for real! Very cool! 

This is a part of science and research - it never stops! As technologies improve, and theories are refined as new knowledge is discovered, we keep learning those finer and finer details and subtleties of Nature.