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Many animals hibernate for the
. They stock up on food and hide away in a hole or
to escape the snow and cold. Scientists now believe early human beings may have hibernated
. The scientists looked at the fossils of bones from our early
who lived around 430,000 years ago. The bones were found in a
in the north of Spain. The scientists are
in studying fossils and ancient bones. They say that the cuts and other signs of
on the bones they examined are similar to those on bones of animals who hibernate, like bears. They also say that early humans may have hibernated to escape the
cold. Winters were much
hundreds of
of years ago.
