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On Monday we learned about a vulnerability in the encryption technology that effects most of the internet, called Heartbleed. Our team grabbed their lab coats and leaped into action to patch the vulnerability on our site.

We are happy to announce SteveSpanglerScience.com is no longer vulnerable.

While we believe we have kept out all the bad guys, we want to make sure our customer's information is safe. We are requiring that all of our customers change their password for their accounts on SteveSpanglerScience.com.

To do so, click the link below and enter in the email address associated with your account. Once you receive an email to that account, follow the simple instructions to reset your password.

Reset your password - https://www.stevespanglerscience.com/customer/account/forgotpassword/

If you have any questions on password resetting, please call our Customer Service team and they will be happy to help you. 1-800-223-9080

If you have any questions about the vulnerability please email security@SteveSpangler.com

As this did effect most of the internet, we also recommend that you change your passwords on all of the websites you visit.

Thank you for being an amazing customer!

-- The SteveSpanglerScience.com Team

Questions? Give us a Call: 1-800-223-9080

Gravi-Goo Jar

Everyone knows that water can't flow uphill...


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Item #: WAGG-550

Usually ships the next day.

Recommended for age 10 and up with adult supervision.

Availability: In stock

Gravi-Goo Jar

Gravi GooEveryone knows that water can't flow uphill. Not so fast... when this goo is poured back and forth between two beakers, Gravi-Goo mysteriously siphons from the higher held beaker to the lower one. Maybe water can flow uphill. You have to play with the stuff to believe it. Recommended for children ages 10 and up.

What's Included?
  • 150 gram jar of Gravi-Goo
  • Blue measuring scoop
What Does It Teach?

Gravi-Goo is a great introduction to molecular weights and structures. Children will marvel at this fascinating goo and learn a lesson about polymers at the same time! Watch out though, even adults have been known to become addicted to the uphill flow of Gravi-Goo!

Customer Reviews

How to Make a Slip'n'Slide Super Slippery Review by Holly F.

We sprinkled just a pinch of Gravi-Goo powder onto the Slip 'n Slide and within a minute, the kids were flying across the plastic. Just don't use too much. A pinch is all you need!!! (Posted on 4/29/13)

Love this goo! Review by Kim Walker

We had a "Super Science After Hours" event at the Louisiana Children's Discovery Center and this goo was a huge hit! It works great. Definitely follow the recommendation of letting it sit, though, very important step :) (Posted on 3/19/13)

Slimy stuff!!! Review by Ellen

I have this in a closed container on my desk and I take it out and pour it back and forth when someone comes in my room. Before long the boring discussion is forgotten and I'm explaining it. Inevitably, they take some with them and "science bug" is spread! (Posted on 2/19/13)

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How many times can you perform the Gravi-Goo experiment?

  • You can perform the Gravi-Goo experiment around 30 times.

Warning - Choking Hazard