The Hydrogen Zone was a general science zone and the first ever USA event. The zone had a promising number of participating students (262) compared to the average for the UK March (383) event, spread fairly evenly across the schools taking part. Some schools enrolled multiple classes and some classes undertook multiple live chats. In some cases success in the first chat led to teachers wanting a live chat the following day to enable students to continue their interactions. The majority of questions submitted were approved and chats were well attended with nearly all live chats featuring three or more scientists and schools making 89% of booked chats. Zoe, Jeff and Lindsay were particularly well engaged, answering over 90% of questions and contributing over 90% of the live chat content.