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Cultured Algae




Holiday Hodgepodge


Blood is a very important part of our every day lives, yet for some reason it still gets a bad rap! Well StemBox is here to fix that. This month we get right in to the messy science of blood by making fake blood, testing the physics of crime scene blood splatters, some acid base chemistry, and even a polymer reaction with blood worms. Let's get messy!

Experiment Instructional Videos

Research Blood On The Web!

  • Blood Donations

    Every year millions of lives are saved thanks to blood donations. One of the biggest players in the blood game is the American Red Cross. To learn more about how donating blood works, cool facts about blood, and to see who it helps the most check out their website!
    Learn how to donate blood here!


    Radiolab consistently delivers top quality podcasts that don't just educate, but inspire. This podcast about blood discusses how blood donations are run as a business, blood as art, and more. While you're on their site, check out some of their other podcasts!
    Listen to the podcast

    Blood Pattern Analysis

    This month we take a "stab" at forensic analysis with our experiment on blood splatters. While we were able to manipulate the speed, height, and volume of blood we tested, there are a ton of other variables crime scene investigators need to take into account.
    Find out how blood pattern analysis works!

  • Blood Types

    Scientific American is a leader in the nation for reputable science news. If you've donated blood it's likely that you know your own blood type. But do you know why people have different blood types or how it even works? Scientific American's article can shed some light on the subject!
    Why do people have different bloody types?


    In our lesson video this month, Kina talks about a protein in blood called "hemoglobin". If that word still sounds like a mystery, don't fret! The Khan Academy's video on Hemoglobin is a great resource if you're itching to learn more about its function in blood.
    Watch the video here!

    Old Blood, Young Blood

    In our video this month, Kina also talks about some of the studies using blood. One of which is the study of young mouse blood being used in older mice to restore cognitive abilities. But did you know that this is being studied in humans too? OMG! Must read article right here!
    Read about the study!

  • Bubble Boy Disease

    SCID, AKA Bubble Boy Disease, is a rare genetic disease in which the immune cells in blood are unable to propagate. This means that the person with SCID has little to no immune system and is therefore left vulnerable to the everyday germs normal people come into contact with everyday. But gene therapies are being explored that can help combat this illness. Gene therapy is an awesome medical marvel, so we highly recommend checking out this article.
    Gene therapies for SCID!

    Hollywood History of Blood

    This month's box features a lot of fake blood activities, but it's taken a long time to perfect this fake blood recipe. Luckily for us, Hollywood has taken on the task of making the finest fake blood over the years. I'm sure your dying to know, so go ahead and click the link below!
    Fake Blood!

    Lady Blood

    So its no secret that women are quite accustomed to blood. Especially since we encounter our blood on a monthly basis, in childbirth, and other parts of daily life and our careers. So why does the stereotype that women faint at the sight of blood persist? Let's debunk those rumors and learn how women and blood have been connected since the dawn of humanity.
    All my bloody ladies, click here!

Get this box

The last day to sign up for the Blood Box was October 10th.

Sign up in time for next month's box!


Steminists in action!

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Troubleshooting the
Blood Box

If your worm goo is too thin, add just a teaspoon more of the worm goo powder and blend it for another 30 seconds. If your worm goo is too thick, we recommend adding some warm water, a tablespoon at a time, to your worm good mixture and blending for 30 seconds. Your worm goo should be the consistency of thick hair gel!

In our experience, this blood mixture does not stain. We washed Kina's white cotton lab coat and shirt in cold water on a regular cycle with regular detergent and everything came out clean and white! However, this doesn't necessarily mean that it won't stain other fabric types, but if you're worried, just be sure to provide a lot of coverage when you are experimenting.

Ammonia, the main component in your Invisible Blood, is a relatively harmless chemical found in household cleaners like Windex. But we cannot state this enough: DO NOT MIX WITH CHLORINE BLEACH. Mixing ammonia with chlorine produces a lethal toxic gas called chlorine gas. Always wear included goggles and gloves when handling chemicals and adult supervision is always required. If you have some more questions be sure to read more about ammonia here!

If your StemBox is missing pieces or you're having other issues, email us!
[email protected]
We are happy to help and will do our best to send you a replacement piece asap!