Nonfiction-Young Adult (21st Century Books) Books in Order
Nonfiction-Young Adult (21st Century Books) is a 3-book series by Rebecca E. Hirsch for ages 13+, at a grades 8–9 reading level, with gentle to moderate content (HootRated intensity 1–3 out of 5).
- Books
- 3
- By publication date
- Content intensity
- Gentle to moderate
- HootRated 1–3 out of 5 · avg 1.7
Nonfiction-Young Adult (21st Century Books) Reading Order
Series numbers aren't available for most Nonfiction-Young Adult (21st Century Books) books, so they're listed by publication date (oldest first).
| # | Title | Reading Level | Ages | Content |
|---|---|---|---|---|
| 1 | Climate migrants 2017 | Level 8-9 | 13+ | Moderate |
| 2 | De-Extinction 2017 | Level 8-9 | 13+ | Gentle |
| 3 | The human microbiome 2017 | Level 8-9 | 13+ | Gentle |
Content Intensity Across the Series
VariesContent intensity ranges from Gentle to Moderate across the series.
Series books grow with readers — but that's also the trap. Most series start at one reading level and one content intensity and drift upward over the course of the run. Nonfiction-Young Adult (21st Century Books) (3 books by Rebecca E. Hirsch) lands at a grades 8–9 reading level, with average content intensity 1.7/5. Intensity varies from book to book, so check individual ratings in the list above.
The reading-order table above lists every book with per-volume reading level, age and intensity ratings so you can spot any escalation before it catches your reader off guard. For a deeper dive into how we score text difficulty vs. emotional weight separately — and why series readers especially benefit from that split — see our methodology page.
All Nonfiction-Young Adult (21st Century Books) Books
Climate migrants
Rebecca E. Hirsch
Climate migrants
Rebecca E. Hirsch
De-Extinction
Rebecca E. Hirsch
De-Extinction
Rebecca E. Hirsch
The human microbiome
Rebecca E. Hirsch
The human microbiome
Rebecca E. Hirsch
Series Like Nonfiction-Young Adult (21st Century Books): What to Read Next
Similar reading level, content intensity and themes.
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- International Organizations (World Almanac) by Jean F. Blashfield 3 books · Grades 8–9 · gentle to mild content
- Watts Library by Anthony D. Fredericks 9 books · Grades 6–7 · gentle to moderate content
- KidHaven Science Library by Gail B. Stewart 4 books · Grades 6–9 · gentle to mild content
- Projects For Young Scientists by David E. Newton 3 books · Grades 7–9 · gentle content
Questions about the Nonfiction-Young Adult (21st Century Books) series
- What reading level is the Nonfiction-Young Adult (21st Century Books) series?
- Nonfiction-Young Adult (21st Century Books) books are at a grades 8–9 reading level (average grade level 8.4), and HootRated recommends the series for ages 13+. There are 3 books in the series.
- What order should I read the Nonfiction-Young Adult (21st Century Books) books?
- Series numbers aren't available for most Nonfiction-Young Adult (21st Century Books) books, so HootRated lists them by publication date: Climate migrants (2017); De-Extinction (2017); The human microbiome (2017).
- What age is the Nonfiction-Young Adult (21st Century Books) series appropriate for?
- HootRated recommends Nonfiction-Young Adult (21st Century Books) for ages 13+. Content is gentle to moderate (HootRated intensity 1–3 out of 5). Intensity varies from book to book, so check individual ratings in the list above.