Smithsonian's Human Origins Program

Smithsonian's Human Origins Program The Human Origins Program at the Smithsonian is dedicated to understanding the scientific evidence for how the traits that make us human evolved.
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Wondering about our cover photo? These 4 skulls represent 4 species of early human, all found in East Africa (northern Kenya), which overlapped in time. While we are the only species of human left on earth, our family tree was once diverse. The skulls are (from left to right):

KNM-ER 1813, Homo habilis, about 1.9 million years old
KNM-ER 3733, Homo erectus, about 1.8 million years old
KNM-ER 1470, Homo rudolfensis, about 1.9 million years old
KNM-ER 406, Paranthropus boisei, about 1.7 million years old

Differences in the pelves (or pelvises, both terms are acceptable) between modern humans and Neanderthals have typically...
08/27/2026

Differences in the pelves (or pelvises, both terms are acceptable) between modern humans and Neanderthals have typically been interpreted as Neanderthals being an outlier in the human family tree. A new comparative study by Yoel Rak at Tel Aviv University and colleagues suggests that it is actually modern human males that are the outliers. A more forward-positioned hip joint allows for more efficient shock absorption in modern human male pelves compared to the ancestral condition present in human females and Neanderthal males. Little is known about Neanderthal females pelves, and the authors suggest that modern human females only retain the ancestral hip position due to obstetric limitations.

A new study by the Department of Anatomy and Anthropology at Tel Aviv University, published in Scientific Reports, offers an explanation for one of the striking differences between men and women: the evolutionary development of the modern human pelvis.

Neanderthals are best known from Europe and the Near East, and now perhaps also the Arabian Desert. James Blinkhorn from...
08/26/2026

Neanderthals are best known from Europe and the Near East, and now perhaps also the Arabian Desert. James Blinkhorn from the University of Liverpool and colleagues used a statistical model to analyze stone tools from the site of Jebel Katefeh-1 on the Arabian peninsula and found that the form of the stone tools was much closer to tools made by Neanderthal than tools made by contemporaneous modern humans. This would expand the range of Neanderthals as well as the types of environments they could survive and thrive in.

Stone tools from a lakeside site in Saudi Arabia hint that Neanderthals were adapted to the arid Arabian interior, not just to cold places.

Turns out your sweet tooth isn't just for helping you scarf down a pint of ice cream - it was also essential for early h...
08/25/2026

Turns out your sweet tooth isn't just for helping you scarf down a pint of ice cream - it was also essential for early human brain evolution. Jennie Brand-Miller from University of Sydney and colleagues recently explored the past 4 million years of hominid diets. Counter to the idea that meat allowed our ancestors to grow large brains, the team concluded that sugars, originally from fruit and honey and later from starches, were vital for evolving the large brains we have today.

Scientists examined four million years of hominin diets. They found that natural sugars may have supplied energy—in the form of glucose—to growing brains before cooking made starchy foods easier to digest

A recent study led by The Ohio State University's Luke Fannin studied kinematic data on the feet of a prolific verticall...
08/20/2026

A recent study led by The Ohio State University's Luke Fannin studied kinematic data on the feet of a prolific vertically-climbing cercopithecoid monkey, the sooty mangabey, in the wild and concluded that the last common ancestor of humans and chimpanzees could have been a vertical climber, no matter what its foot bones looked like.

New research suggests that no matter what we eventually determine the last common ancestor of humans and chimpanzees to be, we'll learn it was a primate that climbed trees.

A recent study led by The University of Tokyo / UTokyo Yousuke Kaifu concluded that like modern humans, 𝘏𝘰𝘮𝘰 𝘧𝘭𝘰𝘳𝘦𝘴𝘪𝘦𝘯𝘴𝘪...
08/18/2026

A recent study led by The University of Tokyo / UTokyo Yousuke Kaifu concluded that like modern humans, 𝘏𝘰𝘮𝘰 𝘧𝘭𝘰𝘳𝘦𝘴𝘪𝘦𝘯𝘴𝘪𝘴 and 𝘏𝘰𝘮𝘰 𝘦𝘳𝘦𝘤𝘵𝘶𝘴 may have experienced helplessness during infancy.

Homo erectus and H. floresiensis skulls both show defects similar to those modern human babies can develop after repeatedly resting on the same side

A recent study led by Duke University's Richard Kay examined fossil primate brain virtual endocasts and concluded that e...
08/13/2026

A recent study led by Duke University's Richard Kay examined fossil primate brain virtual endocasts and concluded that enhanced vision, rather than higher reasoning (related to frontal lobe expansion), drove the evolution of large brains in primates - including humans.

Brains rot within days. The bony case that held them can last 33 million years, which is why primate brain evolution has been so hard to read from…

A recent study led by Gaziantep Üniversitesi Resmi Sayfası's İsmail Baykara concluded that discoveries unearthed in Üçağ...
08/12/2026

A recent study led by Gaziantep Üniversitesi Resmi Sayfası's İsmail Baykara concluded that discoveries unearthed in Üçağızlı II Cave in Türkiye indicate that modern humans and Neanderthals not only crossed paths but also may have shared some cultural traditions including making similar tools, practicing similar hunting techniques, and collecting the same kind of seashells to make beads.

Discoveries at a Üçağızlı II cave in southern Turkey suggest that Neanderthals and Homo sapiens made similar tools, hunted the same animals and both collected shells.

Start your week off by listening to the most recent episode of The Leakey Foundation's Origin Stories podcast, featuring...
08/10/2026

Start your week off by listening to the most recent episode of The Leakey Foundation's Origin Stories podcast, featuring Penn State's Nina Jablonski talking about the origin of clothing!

Humans are the only animals that get dressed every day. Clothing is one of our most important inventions, yet we rarely even think about it as a technology. Nina Jablonski joins us to explore when and why our ancestors started wearing clothes, and...

A team led by UC Berkeley's Yulin Zhang used a new computational approach  that can detect ancient hominin ancestry in m...
08/06/2026

A team led by UC Berkeley's Yulin Zhang used a new computational approach that can detect ancient hominin ancestry in modern humans without requiring archaic reference genomes to reveal a more complex picture of human evolution than previously imagined. Leveraging this approach, the research team recently report that an unidentified “ghost” population contributed DNA to the ancestors of all modern humans before they dispersed out of Africa.

“TRACEing” archaic hominin ancestry in modern humans without archaic genomes By Walter Beckwith Thu, Jul 30, 2026 SHARE ON: TwitterFacebook American Association for the Advancement of Science (AAAS)—A new computational approach that can detect ancient hominin ancestry in modern humans without ...

Alexander Janas from Eberhard Karls Universität Tübingen and team recently announced the latest archaeological finds fro...
08/04/2026

Alexander Janas from Eberhard Karls Universität Tübingen and team recently announced the latest archaeological finds from Hohle Fels Cave in southwestern Germany attributed to some of Europe's earliest 𝘏𝘰𝘮𝘰 𝘴𝘢𝘱𝘪𝘦𝘯𝘴: a pair of tiny bird figurines carved from mammoth ivory and vulture-bone flute fragments, discovered during the 2025 field season and dated to ~40,000 years ago.

Newly discovered figurines point to skills that might have helped shape early humans’ expansion across Europe.

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