Can we train our taste buds for health? A neuroscientist explains how genes and diet shape taste

Researchers are increasingly learning that early diet can shape taste preferences but that our taste buds can also be trained to prefer healthier foods. RichVintage/E+ via Getty Images

Have you ever wondered why only hummingbirds sip nectar from feeders?

Unlike sparrows, finches and most other birds, hummingbirds can taste sweetness because they carry the genetic instructions necessary to detect sugar molecules.