![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2024/07/071324_reviews_last-drop_feat.jpg)
The world has water problems. This book has solutions
The Last Drop Tim Smedley Picador, $29.99 A journalist and a farmer visit three fields with different styles of cultivation — conventional, organic and no-till — to bury cotton underwear in each. Though this sounds like the beginning of a bad joke, it’s …