In a new study published Monday in the journal Current Biology, Stony Brook University researchers working with Florida scientists discovered seven endangered sawfish living in two rivers conceived through a process called parthenogenesis — the production of offspring without sex or male sperm, or in simpler terms, “virgin birth.” So ladies, take a bow. Apparently we can do it all. Scientists have long known that insects, crabs and other invertebrates can reproduce without partners. Female birds, reptiles and sharks in captivity have also occasionally surprised scientists with virgin births. But until now, researchers never knew whether the behavior happened in...