I read this all in one day. I couldn't put it down! I suspect if I'd spent longer trying to think about the science of time travel, I might find some flaws in it. But ehh I didn't.

I liked the environmental message--nothing too controversial by now, for sure, but still. Climate change is happening, y'all.

Recommended for fans of... Back to the Future? IDK. Not a good readalike for the [b:The Sisterhood of the Traveling Pants|452306|The Sisterhood of the Traveling Pants (Sisterhood, #1)|Ann Brashares|https://d202m5krfqbpi5.cloudfront.net/books/1388320534s/452306.jpg|1058370] books--it's pretty lacking in the female friendship aspect, and also it's a sci-fi ecological thriller? Eh you know probably a good readalike for [b:Matched|7735333|Matched (Matched, #1)|Ally Condie|https://d202m5krfqbpi5.cloudfront.net/books/1367706191s/7735333.jpg|9631645], [b:Delirium|11614718|Delirium (Delirium, #1)|Lauren Oliver|https://d202m5krfqbpi5.cloudfront.net/books/1327890411s/11614718.jpg|10342808], that kind of romance-y dystopia-y thing.