Dinosaur-killing asteroid crash made way for frogs: Study

An asteroid strike 66 million years ago that obliterated three-fourths of then existing life on Earth, including dinosaurs, set the stage for a rapid rise of frogs, according to a study. Scientists sampled genes from various frog species and found their three major lineages, making up 88% of the 6,700 known species, which rose after the extinction event of dinosaurs.