Scientists have struggled for a long time to explain why 85-90 percent of people are right-handed. They’ve known genetics plays an important role in people occasionally ending up left-handed, but they also know it is not the whole story.
Amphibians are going extinct faster than any other class of organisms in human history. Experiments suggest that some species might be able to tolerate certain pesticides in the short run. Whether that could give them enough of a cushion to adapt over the long run remains to be seen.
In her new book Animal Wise, Virginia Morell challenges us to recognize the evolutionary roots of animal cognition and to see their rich intellectual and emotional capacities as shaped by natural selection.