@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Dinosaurs went extinct 65 million years ago, mammoths 4,000 years ago, and the Christmas Island Rat 119 years ago. Since becoming a popular concept in the 1990s, de-extinction efforts have focused on grand animals with mythical stature, but in a paper published March 9 in the journal Current Biology, […]