Sam, a young tortoise, wishes he had a longer neck to reach the nicest leaves. Grandad Charlie tells Sam a story about giraffes. Long ago, giraffes didn’t have long necks. They wanted to eat the ...

In a new study, an international research team used genome sequencing for the first time to reveal clues about the genetic changes that led to the evolution of the giraffe’s stature and its ...

Sam, a young tortoise, wishes he had a longer neck to reach the nicest leaves. Grandad Charlie tells Sam a story about giraffes. Long ago, giraffes didn’t have long necks. They wanted to eat the ...