LONDON'S RIVER TURNED MURKY: A SUMMER OF FILTH, 1858

The city of London sought in the heat of summer, 1858. But it was not merely the sun that scorched the metropolis. An even more detestable force infested its very heart: the River Thames. Years of industrial effluents had transformed London's lifeblood into a foul-smelling mire. The stench was overwhelming, a miasma that clung to every cobblestone

One sunny/bright/clear afternoon in 1587, a small colony/115 settlers/a group of adventurers on Roanoke Island vanished without a trace/clue/whisper. This event, known as the Lost Colony of Roanoke, has haunted/baffled/puzzled historians and amateur sleuths/investigators/enthusiaists for centuries/generations/decades. Despite/In spite of countless