Animals Adapted to the Cold Emerged 2.6 Million Years Ago: Study

The animals adapted to the cold began to evolve 2.6 million years ago, when the permanent ice at the poles became more frequent, according to a new study. This was followed by a time when the continental ice layers expanded and contracted, and about 700,000 years ago the cold periods doubled their duration. That’s when many of the current species adapted to the cold evolved, as well as some extinct species, such as mammoths. Research has brought…

Madrid. The animals adapted to the cold began to evolve 2.6 million years ago, when the permanent ice in the poles became more frequent, according to a new study. This was followed by a time when the continental ice layers expanded and contracted, and about 700 thousand years ago the cold periods doubled their duration. It was then that many of the current species adapted to the cold evolved, as well as some extinct ones, such as mammoths. The r…