Homo Erectus Might Have Been Really 'Lazy'

Shipton et. al,
Shipton et. al, PLOS ONE (2018)

Of all the human species that once roamed the world, only one remains—us. Why did our primitive cousins go extinct? For Homo erectus, something like laziness may have played a role, Cosmos reports.

A new study in the journal PLOS One explores the role that H. erectus's lack of drive may have contributed to its extinction. The international team of researchers based their analysis on an excavation of a paleolithic site in central Saudi Arabia with more than 1 million artifacts, finding that the tools H. erectus made were of consistently lower quality than what tool makers in later periods used. Their tools were constructed with whatever material was easiest to get, rather than what would make the best tools.

And it wasn’t because better materials weren’t available. "At the site we looked at, there was a big rocky outcrop of quality stone just a short distance away up a small hill,” study co-author Ceri Shipton of the Australian National University said in a press statement. “But rather than walk up the hill, they would just use whatever bits had rolled down and were lying at the bottom.” He added, “They knew it was there, but because they had enough adequate resources, they seem to have thought, ‘Why bother?’”

A row of stone tools excavated from Saffaqah
Some of the stone tools
Shipton et. al, PLOS ONE, (2018)

Meanwhile, other hominin species, like our own Homo sapiens, were happily clambering up mountains to seek out better materials for their tools. Shipton suggests that H. erectus lacked the tendency toward exploration and curiosity that has helped our species thrive.

The authors theorize that “laziness,” combined with changes to their environment, was likely what did in H. erectus. As the humid environment around them became drier, H. erectus seemingly didn’t adapt: They didn't invent new kinds of tools to deal with the changing landscape, nor did they relocate or travel farther afield. The research team found the tools largely near dry river beds, suggesting that H. erectus neither progressed technologically nor modified their behavior for their altered habitat.

H. erectus did manage to walk upright as we do—a first in human evolution—and it was likely the first hominin to expand their habitat beyond Africa. But the combination of these two newly identified shortcomings, the authors argue, may have contributed to H. erectus's demise. Others expressed doubt about this theory, pointing out that these hominins were pretty successful, existing for some 1.5 million years. However uncreative their methods were, they worked for a long time.

[h/t Cosmos]

Editor's note: This post has been updated.

Remains of Late 19th-Century Shipwreck Found on Jersey Shore

iStock.com/Sierra Gaglione
iStock.com/Sierra Gaglione

The holiday season isn't usually associated with the beach, but nature has a funny way of delivering surprises no matter the time of year. The weekend before Christmas, the remains of an old ship stretching over 25 feet long were discovered at the southern area of Stone Harbor beach, according to nj.com.

Local historians believe the vessel is the D.H. Ingraham, a schooner that sank in 1886 during a voyage from Rockland, Maine, to Richmond, Virginia. Archives from the time recount that while the ship was delivering a cargo of lime, it caught fire. Thanks to station employees at the nearby Hereford Lighthouse, all five men aboard were rescued and given proper shelter for the next four days. The rescuers even received medals of honor from Congress, which are still on display inside the lighthouse, according to the Press of Atlantic City.

This is not the only shipwreck to have been discovered along the Jersey Shore; in 2014, the U.S. Army Corps of Engineers found one while making repairs to the Barnegat Inlet jetty. (New Jersey has its own Historical Divers Association, and at one point its president, Dan Lieb, estimated that the state had up to 7000 shipwrecks off its coasts.)

To check out more coverage about shipwrecks, like this 48-foot find in Florida earlier this year, click here.

[h/t nj.com]

People Have Been Dining on Caviar Since the Stone Age

iStock.com/Lisovskaya
iStock.com/Lisovskaya

Millennia before caviar became a staple hors d'oeuvre at posh parties, it was eaten from clay pots by Stone Age humans. That's the takeaway of a new study published in the journal PLOS One. As Smithsonian reports, traces of cooked fish roe recovered from an archeological site in Germany show just how far back the history of the dish goes.

For the study, researchers from Germany conducted a protein analysis of charred food remains caked to the shards of an Stone Age clay cooking vessel. After isolating roughly 300 proteins and comparing them to that of boiled fresh fish roe and tissue, they were able to the identify the food scraps as carp roe, or eggs. The scientists write that the 4000 BCE-era hunter-gatherers likely cooked the fish roe in a pot of water or fish broth heated by embers, and covered the pot with leaves to contain the heat or add additional flavor.

The clay shards were recovered from Friesack 4 in Brandenburg, Germany, a Stone Age archaeological site that has revealed about 150,000 artifacts, including items crafted from antlers, wood, and bone, since it was discovered in the 1930s. In the same study, the researchers report that they also found remnants of bone-in pork on a vessel recovered from the same site.

Other archaeological digs have shown that some of the foods we think of as modern delicacies have been around for thousands of years, including cheese, salad dressing, and bone broth. The same goes for beverages: Recently a 13,000-year-old brewery was uncovered in the Middle East.

[h/t Smithsonian]

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