Amazingly, the ancient Greeks themselves achieved this level of precision, in part by using highly sophisticated tools ... then use a metal smoothing plate to work out imperfections.

So why didn’t these ingenious people invent metal tools, or build great cities ... How could he possibly solve the great puzzles of human history? Graphic showing earth from space Voiceover ...

We've curated a collection of unique and quirky items that will make your creative juices flow like a Jackson Pollock ...

But a bird wing is vastly more sophisticated than anything composed of sheet metal and rivets ... The long, hollow filaments on theropods posed a puzzle. If they were early feathers, how had ...

but you’ll probably need to use a real notebook of your own to stay on top of the intricate logic puzzles within the cases, and the sophisticated echoes between them. A richly rewarding and ...

Norway’s Leprous have conjured up several exceptionally morose yet symphonic and impassioned progressive metal odysseys over ... like a bittersweet jigsaw puzzle comprised of cathartic ...

Katz had to go outside the team to find decent equipment -- the Jets' workout facility consisted of nothing more than a primitive device akin to a "metal shock ... piece in the puzzle," said ...

The pilgrims who came to Göbekli Tepe lived in a world without writing, metal, or pottery ... villages and from there to technologically sophisticated societies with great temples and towers ...

And all the most sophisticated technologies we currently ... But the process of learning is incomplete - there are several major puzzles in modern physics.' 'Within the mainstream of theoretical ...

Play the USA TODAY Daily Crossword Puzzle. These are the 40 best bars in Austin ... The exhausted wood and rusted metal ...

“The sophisticated Clovis technology that developed ... This new historical review and experiment may help solve the puzzle of how communities in North America actually used them.