According to their website: “Tumblehome Learning has opened submissions for children’s and YA adventure books, mystery books, and biographies that center around science themes. Submissions should be based around real science and be appropriate for somewhere between ages 7 and 17. We accept manuscripts 25,000 to 70,000 words in length, but no simultaneous submissions.”
For more information: http://tumblehomelearning.com
And on a totally unrelated note, I ran my first half marathon this past Sunday. It was a learning experience. I learned that I am old. And slow.