![[An illustration of a microglia.]](https://blogs.iu.edu/sciu/files/2021/02/Microglia-Warrior2.png)
One of the first things you’ll learn about if you start studying the brain is that it is made of cells called neurons. While neuroscientists have a decent understanding about how neurons work, it turns out that at least half of the brain is actually made of non-neuronal cells called glia*. Glia, named based on the Greek word for ‘glue,’ were initially thought to be a type of connective tissue in the nervous system, acting just as scaffolding, while the neurons did all the communicating. In the last couple decades, the growing field of neuroimmunology has highlighted the importance of a certain kind of glia: microglia, the brain’s resident immune cells…
General Science
What is a species and why should we care?
![[Many small birds are diving and floating in shallow water. There are birds floating in the foreground and background, while the middle ground is full of birds mid-flight. They all look similar and may be the same species.]](https://blogs.iu.edu/sciu/files/2022/02/Screenshot-923.png)
When you read about an animal on Wikipedia or in a textbook, one of the first things mentioned is its scientific name — genus and species. But, how do we define a species? First, why are we concerned with classification? Humans have an innate need to categorize. It’s ingrained in our minds from our days as hunter-gatherers, when we needed to remember what each plant was and whether it was safe to eat or poisonous. Taxonomy is a hierarchical system that classifies the biological continuum. It comes from Greek philosophers (including Plato and Aristotle), who ranked animals as closer or farther from God. Darwin then focused on common ancestors, and his ideas on how to draw phylogenies are still used today…
The new beast in our backyards
![[Reddish brown coywolf in the snow. It has partially turned to face the camera.]](https://blogs.iu.edu/sciu/files/2022/02/coyote-face-snow_-_virginia_-_forestwander-1.jpg)
Watch out, Hoosiers! There’s a new predator afoot. Thirty to forty-five pounds, hungry, mobile, and travelling up to 15 miles per day — coywolves are Indiana’s newest predators! A quick note on terms — since the early 1900’s, the term ‘coywolf’ has described a hybrid animal from a wolf and a coyote. The mid-2000’s saw the rise of wolf-coyote-dog hybrids across North America. These creatures are widely called ‘coywolves.’ All uses of ‘coywolf’ or ‘coywolves’ in this article refer to the latter. Scientists are still somewhat divided on whether these triple-hybrids are a separate species…
Neuroimaging: Three important brain imaging techniques
At the birth of neuroscience, it was difficult to understand how the brain worked because, at the time, those studying it did not have the technology to analyze and measure brain activity in real time. Thankfully, we have come a long way since the first dissections of the human brain, and we can use a multitude of wonderful pieces of technology that enable the study of the brain and its inner workings. Three different neuroimaging techniques, EEG, MRI, and PET, allow us to explore and measure the insane amounts of activity going on in our brain; however, each comes with its own strengths and limitations, making the motivations behind using them very important…
Fieldwork codes-of-conduct
Field scientists often work in isolated, unsupervised, or otherwise dangerous locations. For instance, I used to work along remote streams with limited access and communication with my institution. These secluded environments can create conditions that exacerbate sexual harassment and bullying, from fellow field scientists or other people encountered in the field. This can lead to unsafe situations, particularly for non-male students and those belonging to marginalized groups. As a striking example of these hostilities, approximately 70% of women scientists have experienced harassment while doing fieldwork and one in four have been assaulted. Scientists at remote field sites can also experience hate symbols, threats of violence, or verbal abuse about a disability from people they encounter…
The grocery store sells many kinds of salt, but are they actually different?
I walk down the spice aisle of my local grocery store. It smells like pepper and cinnamon, but all I need is salt. Scanning the shelves of alphabetically arranged spices, it isn’t there. It has a display all its own, just to the left. And there’s not just one type. There are many. Mediterranean sea salt, iodized salt, black truffle salt, kosher salt, smoked salt, the list goes on. But what’s the difference? According to Samin Nosrat, in her bestselling book, “Salt, Fat, Acid, Heat”, salt is the “most important element of good cooking,” so you have to have it. But what kind should you get? Well, it depends on what qualities matter to you. Is it the geology? The chemistry? The size of the crystal grains? Or maybe the flavor…
Making and Reaching New Year’s Resolutions the SMART way
It’s January 1st. You bought your notebook, numbered the page, and you’re ready; It is time to make some New Year’s resolutions. If you’re someone that regularly makes resolutions, you’re not alone. The start of a new year brings a natural push to start new routines or try to break bad habits. However, many people struggle to keep resolutions. The good news is, behavioral science and the theory of motivation tell us there are evidence-based strategies that can help…
The happiest biotechnology lab on Earth
A trip to Walt Disney World includes popcorn, fireworks, and…genetic engineering? As discussed in a previous ScIU post, Disney attractions are full of surprising science, like illusions in the Haunted Mansion and electron movement in firework shows, but perhaps the most interesting example is the biotechnology at work in the Living with the Land attraction at EPCOT. In 1982, Disney debuted Listen to the Land, a slow-moving boat ride through agricultural vignettes that culminated in a visit to sprawling greenhouses that provided a peek at Disney’s biotechnology labs…
Finding a therapist: Frequently asked questions
Thinking about starting therapy but overwhelmed by the process of finding a therapist? You’re not alone. There are a lot of reasons that people don’t seek treatment. This post will discuss how to find a therapist and things to consider during your search. “Should I go to therapy? How do I know when it’s ‘time?’” The shortest answer is therapy can be appropriate at any time, as long as you want to be there. It is extremely common to seek therapy when we’re struggling with severe or minor difficulties…
Primates: Nature’s grounds keepers
![[A young macaque enjoys some jackfruit up in the trees.]](https://blogs.iu.edu/sciu/files/2019/07/jackfruit-4037499_1920.jpg)
Over the past few years, the iconic video below has become the face of orangutan conservation efforts: a young male orangutan confronting a bulldozer as it destroys the forest around him. Orangutan populations once stretched from the islands of Indonesia through Vietnam and into the south Asian continent. Fossils of orangutan ancestors have even been found all the way up into northern India! Today, wild orangutans can only be found in Sumatra and Borneo, two islands in Indonesia…