The role for which a dog was bred—say retrieving birds—is reflected in their brain structure, according to a study of 33 breeds. There are hundreds of dog breeds around the world, from the teensy chihuahua to the massive Saint Bernard—all thanks to centuries of selective breeding by humans. With …
In this edition: Scientists performed MRI scans on 33 dog breeds and found that selective tweaking by humans have not only changed the sizes, shapes, colors and behaviors of our canine pals but altered the very structure of their brains. Plus, these crystalline nets harvest water from desert air and turn carbon dioxide into liquid fuel—an invention that could provide drinking water to people who are living in water-stressed regions. And, a new pill that could push back the aging process.