Tom Metcalfe
- Indexed articles, last 90 days
- 8
- Latest publication
- Sep 29, 2026
- Outlet visibility, for LiveScience
- Top 50K sites
- Earliest in this view
- Jul 20, 2026
Latest articles
Africa's oldest known defensive wall outside Egypt discovered, and it's 4,000 years old (opens the original)
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Archaeologists have unearthed 4,000-year-old defensive walls in Morocco that are the oldest structures of their kind in North Africa outside the Nile Valley. The discovery expands what's known about the human development of this region of northwestern Mediterranean Africa, known as the Maghreb, particularly about the adoption of agriculture. "For more than a century, the Maghreb was treated as a blank space in the story of Mediterranean later prehistory," Giulio Lucarini, an archaeologist at Ita
Finland's largest Viking Age silver hoard discovered by metal detectorist — and it has thousands of coins and pieces of jewelry (opens the original)
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The largest hoard of Viking Age silver ever found in Finland — which contains almost 10 pounds (4.5 kilograms) of coins and jewelry — has been unearthed by a metal detectorist about 95 miles (150 kilometers) north of Helsinki. The hoard had been divided into two deposits and buried in birch-bark containers. Although the coins and jewelry likely date to between A.D. 1000 and 1050, it's unknown exactly when they were buried, Esko Tikkala, an archaeologist at the Lahti Historical Museum who excavat
World's oldest evidence of habitual drug use traced back 25,000 years to Indonesia (opens the original)
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The world's oldest known habitual drug use can be traced to an island in Indonesia, where ice age hunter-gatherers sucked on betel nuts — palm seeds that contain a neuroactive substance, a new study finds. Scientists made the discovery after studying strange grooves in the teeth of two prehistoric hunter-gatherers. The deep grooves were caused by regularly sucking on betel nuts (Areca catechu), likely for relief from the pain of toothache, according to the study, which was published Wednesday (S
Man rummaging in a Polish junkyard finds a 1,800-year-old shield holding the cremated remains of a Vandal warrior (opens the original)
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A man searching for spare auto parts at a junkyard in Poland discovered an entirely different kind of treasure: part of a 1,800-year-old shield that was filled with bones. The shield's age and location suggest that it belonged to a Vandal warrior, according to the archaeologists who excavated the find. The Vandals were Germanic people who lived in Poland at that time. After the Germanic invasions of the Roman Empire, the Vandals, whose name became synonymous with destruction, moved south and eve
Neanderthals passed on a gene that helps modern humans pack on more muscle — but only a few people have it (opens the original)
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Tens of thousands of years ago, Neanderthals mated with modern humans and passed along a gene variant that enables us to pack on more muscle, a new study finds. Researchers found that this specific Neanderthal gene, a variant of the growth hormone receptor gene, causes cells to respond strongly to growth hormone. The Neanderthal version of the gene creates a growth hormone receptor with two amino acid changes and one deletion, compared with the typical receptor in most modern humans. The researc
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