About 4‑H2O

In the 2010 National Science Experiment, 4‑H2O, youth will participate in a live demonstration of how carbon dioxide builds up in the atmosphere.

How-To Video

Use these step-by-step instructions and the Experiment Guides below to complete the 2010 National Science Experiment, 4‑H2O.

Youth Experiment Guide

Youth Experiment Guide

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Facilitator Guide

Facilitator Guide

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We Want to Hear from You!

Please take a short survey about your 4-H at Home experience!

We Want to Hear from You!

Please take a short survey about your 4-H at Home experience!