Researchers in Spain have unearthed a fragmented hominin face, believed to be over 1.4 million years old, at the Sima del Elefante cave site in Atapuerca. This fossil, consisting of a maxilla (upper jawbone) and cheekbone, represents the oldest known hominin fossil found in Europe and potentially pushes back the earliest evidence of human ancestors on the continent by 200,000 years. The discovery provides crucial insight into the early evolution of the human face and the dispersal of hominins across Eurasia, although its specific lineage remains to be determined through further study. The researchers suggest this finding might be related to a hominin jawbone found at the same site in 2007 and dated to 1.2 million years ago, potentially representing a single evolutionary lineage.
Researchers have reconstructed the face of St. Thomas Aquinas using 3D modeling based on his skull, offering a glimpse of his appearance 750 years after his death. Analysis also suggests he suffered from a chronic ear infection and severe osteoarthritis, possibly contributing to his demise. While the cause of death remains uncertain, these findings provide valuable insight into the health and physical characteristics of the influential theologian and philosopher.
HN commenters discuss the methodology used to reconstruct Aquinas's face, with some skepticism about its accuracy given the reliance on skull shape alone and the potential for subjective interpretation by the artists. Several commenters point out the irony of reconstructing the face of a theologian who emphasized the immaterial soul over physical appearance. Others question the significance of the project, while some express interest in the historical and forensic aspects. A few commenters debate the cause of death, with one suggesting it might have been a stroke rather than the reported "cerebral stroke" mentioned in some historical accounts. Overall, the comments express a mixture of curiosity, doubt, and philosophical reflection on the nature of identity and the limits of historical reconstruction.
Summary of Comments ( 35 )
https://news.ycombinator.com/item?id=43455251
Hacker News users discuss the discovery of a million-year-old human facial fragment, expressing excitement about the implications for understanding human evolution. Some question the certainty with which the researchers assign the fossil to Homo erectus, highlighting the fragmented nature of the find and suggesting alternative hominin species as possibilities. Several commenters also discuss the significance of Dmanisi, Georgia, as a key location for paleoanthropological discoveries, and the potential for future finds in the region. Others focus on the methodology, including the use of 3D reconstruction, and the challenges of accurately dating such ancient specimens. A few highlight the persistent difficulty of defining "species" in the context of evolving lineages, and the limitations of relying on morphology alone for classification.
The Hacker News post titled "Fragment of a human face aged over one million years discovered" (linking to a Science Daily article about a hominin facial fragment found in Spain) has several comments discussing the discovery's significance and implications.
Several commenters express excitement and wonder at the find, highlighting the vast timescale involved and the implications for understanding human evolution. One commenter reflects on the sheer length of time represented by a million years, emphasizing the numerous generations and evolutionary changes that have occurred since. Another notes the remarkable preservation of the fossil, considering its age.
A recurring theme in the comments is the ongoing debate and changing understanding of human lineage. Commenters discuss the complexity of the hominin family tree and how this new discovery might fit into it. Some highlight the difficulty of definitively placing such fragments within specific species, acknowledging the ongoing research and revisions within paleoanthropology. One user points out the fragmented nature of the fossil record and how each new discovery adds a piece to the puzzle but also potentially raises new questions.
Several commenters discuss the specific characteristics of the fossil, including its robust features, and speculate about the environment and lifestyle of the hominin it belonged to. There's discussion around the features that distinguish it from other known hominins of the period. Some comments delve into the possible relationship of this find to other hominin species found in the region, suggesting potential ancestral connections.
Some comments also touch on the methodology of paleoanthropology, including dating techniques and the process of reconstructing facial features from fragmented remains. There's a brief exchange about the reliability of such reconstructions and the potential for artistic interpretation.
Finally, a few commenters express hope for future discoveries and further research that could shed more light on this period of human evolution. The overall sentiment in the comments is one of fascination and curiosity about the deep history of humanity and the ongoing quest to understand our origins.