The significance of this 110-year-old discovery is that the head contained ribonucleic acid (RNA) molecules, which carry the ...

while Denis Leary will once again voice the cantankerous sabertooth tiger, Diego. Bridging the gap between the mainline Ice ...

and animals were scurrying to save themselves from the upcoming Ice Age, a sloth named Sid, a woolly mammoth named Manny, and a saber-toothed tiger named Diego are forced to become unlikely heroes.