Easily the least-believable part of this book is that people would work together to solve a global crisis, no matter how grave. As we've seen with both climate change and pandemic, countries will fight among themselves to even acknowledge that the problem exists. Or maybe that's just the view in the United States....

Once you get past that, though, what a delightful read! So interesting to see such a "what if" scenario and how it could play out with the science. A little campy in parts, sure, but a great story line, plenty of twists, fascinating science, and heart-stopping adventure.