tutorial

Forum discussion tagged with tutorial.
  1. What is Natural Selection?

    The more popular an idea is, the more it can get muddled up. Natural selection is one such concept that is often misused and misattributed. It comes from the theory of evolution put forward by Darwin, which revolutionized our understanding of how we all got to be here. Here’s how natural...
  2. Which Ancient Civilization Was the Most Advanced?

    We have achieved so much in very recent years and have made many incredible leaps forward. We’re at an amazing time in human history, but it’s important to remember that we are by no means the first ones to achieve amazing things. Sure, we might have superior technology and more knowledge, but...
  3. What Happens When Polar Ice Caps Melt?

    Fears surrounding climate change are growing, and for good reason. Small changes in the concentration of greenhouse gases can trigger an avalanche of events that will change life on Earth as we know it. One big concern relating to climate change is melting polar ice caps, which isn’t an...
  4. What is Sustainable Fashion?

    Back in the day, clothes consisted of whatever could be pieced together in nature. Now, we have fashion that ranges from simple everyday wear to extravagant couture that could only be worn on a runway. No matter what’s being made, though, it all requires materials. These materials are grown...
  5. How To How to Use Less Plastic

    The convenience of plastic has led to its widespread, and sometimes excessive, use. Grocery shopping often makes this blatantly apparent, when you’re left with more plastic to toss than food you bought. It’s almost hard to avoid, but it’s not impossible. If you’re looking for ways to be more...
  6. Are Electric Cars More Environmentally Friendly?

    There’s a lot that we can do to make our lives a little more environmentally friendly. Recycling, using less water, buying fewer single use plastics...the list goes on. But if you want to make a big impact, you’ve probably thought about switching to an electric car. These can be hybrids (using...
  7. What Are Genetically Modified Organisms?

    Genetic modification. Two simple words, but the controversy is palpable. Humans have been playing with genetics ever since we began domesticating wolves and planting our own crops. The modifications we do these days, however, are far more sophisticated and often take place in a lab, which might...
  8. What's the Difference Between Potential and Kinetic Energy?

    Energy is the driving force behind so much in the universe. Without energy, chemical reactions couldn’t take place, including those that keep you alive. Energy is also an important aspect of our daily lives and has become a key consideration in the sustainability of our future. In order to...
  9. What Causes a Chemical Reaction?

    Chemical reactions take place all the time. Iron rusting is a chemical reaction. Burning wood is a chemical reaction. There are even a whole bunch going on in your body right now! The universe runs on chemical reactions, but what’s the catalyst? Here’s what causes chemical reactions: 1...
  10. What Plant is the Most Toxic?

    Nature comes up with a whole host of ways to kill. Predators grow scary teeth and claws, and prey develop effective defense mechanisms. Plants are no exception and are just as capable of killing you as a predatory animal. They’re more subtle about it, though. Toxic plants abound, but it’s worth...
  11. Top 5 Five of the Weirdest Extinct Animals

    There are some wacky critters on the planet. Plunge into the deep seas and you’ll find terrifying-looking fish, explore the jungle and you’ll encounter strange insects. Every part of the world holds an animal that just doesn’t look like evolution treated them well. Let’s look at some that were...
  12. How Do Plant Species Go Extinct?

    Extinctions tend to happen every few million or so years. These extinctions don’t just happen to animals, but plants as well. It shouldn’t be surprising, given that plants are living organisms that adapt to their environment. Changes that affect a plant’s ability to survive and/or reproduce can...
  13. What Causes Lightning?

    Dangerous and beautiful are two words that come to mind when thinking about lightning. Imagine what you might have thought if you were an early human experiencing a lightning storm for the first time. You probably would have thought the world was coming to an end! We now know the science behind...
  14. Why Were Plants Bigger in Prehistoric Times?

    Artist renditions of dinosaurs in their natural habitat often feature enormous, exotic-looking plants. They certainly fit with the scale of the dinosaurs, which were colossal in a way we have a hard time comprehending today. But is this just creative freedom? Were plants actually bigger in the...
  15. Are Birds Really Dinosaurs?

    Some people love birds, viewing them as majestic creatures and even bringing them into their homes as pets. Others are terrified of the beasts and would rather swim through shark infested waters than go near one. If you fall into the latter group, you just might be picking up on an instinctual...
  16. How Does Pollination Work?

    We’re all aware of the importance of bees. They’re our pollinators, and they keep our world full of colorful flowers and help humans increase crop yield. Many other insects are pollinators too, forming a network of critters that help out the planet while they’re going about their daily business...
  17. How Do Cuts Heal?

    When was the last time you had a minor cut? Did you cover it up with a band aid then look at it a day or so later, amazed at how quickly it healed up? Your body is very good at making sure that a small wound doesn’t spell the end. How does it do this so efficiently? Here’s how cuts heal: 1...
  18. How To How to Get Rid of Scars

    Everyone has scars (the physical kind). Childhood accidents, small cuts, minor surgery - no matter the cause, chances are you have a scar you want to get rid of. It’s not always certain how to do that, though. There are treatments you can go to a doctor or aesthetician for, as well as many...
  19. How Does the Flu Shot Work?

    Ah, flu season. The coughing. The sneezing. The out of stock tissues and fever medication. And of course, the fear. Many of us don’t think about how serious something as “simple” as a flu can get, and yet it kills thousands every year. Health organizations urge people to get a flu shot not...
  20. How Are Pharmaceutical Drugs Made?

    Pick an ailment, and there’s probably a pharmaceutical drug out there to cure it or at least relieve the symptoms. It’s kind of like the medical world’s “There’s an app for that.” We appreciate what these medications can do for us, but rarely do we think about what goes into creating them...