Mastodons travelled north when climate changed, study finds

Mastodons travelled north when the climate changed, a study has found (Julius Csotonyi/PA)

Mastodons travelled large distances across North America due to climate change 2.5 million to 11,700 years ago, a new study suggests.

Researchers say dramatic environmental changes accompanying the shift or melting of continental glaciers played a key role as American mastodons moved north from their southern ranges.