Man versus lava; Hawaii versus hurricane

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story imageHawaii's Kilauea lava flow that began in June appears to have stalled, after slowing for more than a month. Coincidentally, just in time for residents of the islands to prepare to be hit by tropical storm Ana. The lava flow did relatively little damage, destroying roads but leaving threatened communities relatively unscathed. But active volcanoes are unpredictable, and the flow could resume at any time.

With that, we take a look back on ways that people have tried, and often failed, to contain or divert lava flows. From George S Patton ordering bombing runs on Hawaii's Mauna Loa in 1935, to spraying 6.8 billion liters of water on Iceland's Eldfell lava flow over a five month period, dismissively called "peeing on the lava". The US Geological Survey suggests that the Iceland (and Etna) diversion "may not have succeeded had their respective eruptions continued".

If Ana's winds increase to hurricane-force, it could become the first hurricane to make landfall on the islands in the past 22 years, illustrating Hawaii's peculiar immunity to hurricanes that scientists have been left to speculate about for decades. The island of Kauai being the notable exception.
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Twenty three, forty one, 57, one hundred, 83 or fifty two: which of these is the highest?