Humans crafted cutting
tools out of stone, showing intelligence.
Not exact matches
, would not be nearly enough to carve these colossal figures
out of the steel - hard volcanic
stone with rudimentary
tools; and the island is so small that it could scarcely have provided food for more than 2,000 people.
Something had to be got
out of the way, some obstacle that lay in God's very path; and the Cross was the instrument
of its removal, the
tool by which the
stone was rolled away — «it was a very great one!»
Thus, «giant chunks
of space debris clobbering the planet and wiping
out life on Earth has undeniably broad appeal,» Meltzer says, whereas «no one in Hollywood makes movies» about more nuanced explanations, such as Clovis points disappearing because early Americans turned to other forms
of stone tool technology as the large mammals they were hunting went extinct as a result
of the changing climate or hunting pressure.
Using just scraps
of wood and hot embers, our evolutionary cousins figured
out how to make tar, a revolutionary adhesive that they used to make formidable spears, chopping
tools and other implements by attaching sharp - edged
stones to handles, a new study suggests.
Although some researchers suspect that earlier hominids, not modern humans, made the
stone tools, Marks is hopeful that future digs in Arabia, Iran, and western India will unearth still more evidence
of humanity's bold, early route
out of Africa.
By following a trail
of stone tools and fossils, researchers have traced possible routes for the spread
of early Homo
out of Africa to the far corners
of Asia, starting about 2 million years ago.
His and others» discoveries
of early
stone tools in India and Arabia suggest that moderns did expand
out of Africa during the early migration windows.
The team took extensive steps to rule
out the migration
of artifacts between layers, for example by refitting together broken
stone tools found in the same layer.
Meanwhile,
stone tools found in Arabia and India suggest that Homo sapiens may have made its way
out of Africa much earlier than 50,000 years ago, as usually assumed.
Back in December 2007, archaeologist Zhan - Yang Li
of the Institute
of Vertebrate Paleontology and Paleoanthropology (IVPP) in Beijing was wrapping up his field season in the town
of Lingjing, near the city
of Xuchang in the Henan province in China (about 4000 kilometers from the Denisova Cave), when he spotted some beautiful quartz
stone tools eroding
out of the sediments.
One
of the main criticisms
of the study is that it does not conclusively rule
out natural causes for the breakage
of mastodon bones, presence
of stone tools, and breakage patterns on the rock surfaces.