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...technology of the modern world. Increasingly electronics is at the cutting edge of technology, as illustrated in the following video. TIM DRYSDALE Electronics has come a long way in seven decades. Even more importantly, it’s helped the world develop at a pace that is unprecedented in human history. BERNIE CLARK Ray Kurzweil estimates the next 100 years will bring a rate...

...technology we recorded conclusive proof that the earliest known use of iron by Egyptians was from a meteorite. [Meteorite iron] Meteorite iron The full meaning of the meteorite iron beads within this grave remains to be established, it could not be confirmed if the people who worked this iron, in about 3400BC, knew it came from the sky; no writing existed at this time in...

...technology with many contemporary examples. The city of Pittsburgh has three suspension bridges spanning the Allegheny River. Known collectively as the Three Sister bridges, all employ eyebars in their suspension chains. They were constructed at much the same time as the Silver Bridge and are clearly still standing. They do, however, have a marked difference in their...