The Free Press Journal

We be the last surviving hominin

According to study, humans outlived other species by adapting to ‘extreme’ climate

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The unique ability of homo sapiens to adapt to ‘extreme’ environmen­ts around the world — where other species such as the Neandertha­ls perished — may have helped us become the last surviving hominins on the planet, a study has found.

Scientists from Max Planck Institute for the Science of Human History in Germany and the University of Michigan in the US reviewed datasets relating to the Middle and Late Pleistocen­e (300-12 thousand years ago). The study, published in the journal Nature Human Behaviour, shows unique environmen­tal settings and adaptation­s for Homo sapiens relative to previous and coexisting hominins such as Homo neandertha­lensis and Homo erectus.

“Our species’ ability to occupy diverse and ‘extreme’ settings around the world stands in stark contrast to the ecological adaptation­s of other hominin taxa, and may explain how our species became the last surviving hominin on the planet,” researcher­s said.

Researcher­s suggest that investigat­ions into what it means to be human should shift from attempts to uncover the earliest material traces of ‘art’, ‘language’, or technologi­cal ‘complexity’ towards understand­ing what makes our species ecological­ly unique.

In contrast to our ancestors and contempora­ry relatives, our species not only colonised a diversity of challengin­g environmen­ts, including deserts, tropical rainforest­s, high altitude settings, and the palaeoarct­ic, but also specialise­d in its adaptation to some of these extremes.

Although all hominins that make up the genus Homo are often termed 'human' in academic and public circles, this evolutiona­ry group, which emerged in Africa around three million years ago, is highly diverse.

Some members of the genus Homo (namely Homo erectus) had made it to Spain, Georgia, China, and Indonesia by one million years ago.

Yet, existing informatio­n from fossil animals, ancient plants, and chemical methods all suggest that these groups followed and exploited environmen­tal mosaics of forest and grassland. It has been argued that Homo erectus and the ‘Hobbit’, or Homo floresiens­is, used humid, resource-scarce tropical rainforest habitats in Southeast Asia from one million years ago to 100,000 and 50,000 years ago, respective­ly.

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