JBS Haldane speculated in 1927 about the invention of tubular spaceships that would take humanity to space and how " wings of metallic foil of a square kilometre or more in area are spread out to catch the Sun's radiation pressure ".
32.
It had appeared first in serialised form with a different ending as " A Prophetic Trilogy ", consisting of three books : " A Trap to Catch the Sun ", " The Last War in the World " and " The World Set Free ".
33.
In 1973 a Greek scientist, Dr . Ioannis Sakkas, curious about whether Archimedes could really have destroyed the Roman fleet in 212 BC, lined up nearly 60 Greek sailors, each holding an oblong mirror tipped to catch the sun's rays and direct them at a tar-covered plywood silhouette 160 feet away.
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According to the host, if you were to fill a pop bottle or a jar with ordinary tap water, seal the lid down tight, then leave it outside in a place that catches the sun-within a couple of weeks the vessel will be completely filled with algae and similar-looking slimy green stuff.
