(Phys.org)—A clever, exhaustive experiment created and carried out by a combined team of researchers from Germany, the U.K. and the U.S. has explained why some nectar-producing plants produce dilute nectar in spite of a highly sugared preference by bats. In their paper published in the journal Science, the researchers describe their experiment and what they found. Hamilton Farris with the Louisiana State University School of Medicine offers a Perspective piece on the work done by the team in the same journal issue.