Animals have evolved to eat a lot of different things, even stuff that barely passes for food, and it shapes our entire lives from what we look like to where we live. Today, we’ll talk about why being ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Scientists have long been mystified about how animals who munch on ...

My friend, Susan in Santa Monica, posted a photo of herself on social media in a state of blissful repose, a white rat perched atop her chest. I recoiled at the sight of it. I phoned her and asked, ...