Yam Hill

Polly Want A Cracker might be the only teenage girl still curious about going outside-Old Earth. A place that was once beautiful, but is no longer able to support human life.
When Polly and her best friend, Bic, witness an innocent man being ejected from Yam Hill, thrown back into Old Earth, where nothing survives more than a few minutes...
The Elders must silence them.
After their own illegal ejection from Yam Hill, Polly and Bic must learn to survive Old Earth, a dangerous place they've only read about in centuries-old books and magazines.
Yam Hill was a finalist for the 2018 Next Generation Book Award (Best Science Fiction).
Science fiction, action & adventure, survival, yams.
Gravity not included.