If you thought Olaf and Elsa were just taking over the box office this weekend, think again. An extremely endangered Puerto Rican toad named Olaf became the first to be born via in vitro fertilization ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SAN JUAN, Puerto Rico (AP) — A critically ...

A critically endangered Puerto Rican toad was for the first time born via in vitro fertilization as U.S. scientists attempt to save it from extinction, officials announced Friday. Olaf — named in ...