Alva Review-Courier -

WACO, Texas (AP) — It might be ancient history, but the question of what killed the Waco mammoths has unearthed strong feelings about 65,000 years later.

The Waco Tribune-Herald (http://bit.ly/2nsTIgY ) reports a recent Baylor University study suggesting that the beasts at the Waco Mammoth National Monument might have died of drought rather than flood has raised the hackles of the man who oversaw the excavation of the bones years ago.

Now Calvin Smith, retired director of Baylor's natural history museum, is officially challenging the study. He recently sent a 2,200-word rebuttal to the journal...