There are a lot of ways humanity is readying itself for the effects of climate change, but in Japan, they’re digging. They are tunneling a massive 42-foot-wide cavern that will eventually stretch some 2.8 miles under the city of Tokyo and divert flood waters.
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00:00there are a lot of ways humanity is readying itself for the effects of climate change but
00:08in japan they're digging this is the massive 42 foot wide tunnel that will eventually stretch
00:13some 2.8 miles under the city of tokyo but why well for drainage as the island nation is expected
00:20to continue to get more and more heavy rainfalls as our planet gets warmer that means the city
00:25will need more places for that water to go and their 23 year old system just won't cut it the
00:30manager of the tunnel program says that in the 23 years they have had their previous system they
00:34have had to use it 147 times adding that the tunnel has mitigated some 1.03 billion dollars in flood
00:41related damages however as the temperature goes up and there's more water vapor in the atmosphere
00:46there will be heavier and more frequent rain events especially what they call guerrilla downpours or
00:51sudden violent storms that are becoming more common in japan that also means severe storms
00:56like the recent typhoon shan shan will likely become more common as well