Just when we think we’ve got things figured out, we learn that we have much more to learn. Scientists recently learned that some species of bats might actually do better living under concrete bridges than in bat caves. The University of Boston team found that bats living under bridges were larger and grew faster than bats in a cave. Although it’s not perfectly clear why these bats were doing so well, it might be because the area under the bridges is warmer and closer to good feeding grounds.