ESTIMATEDDate confidence: ESTIMATEDA target, not a fixed dateHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all ESTIMATED pins60% CONFIDENCEOverall confidence: 60%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
A target, per the source[1]: "current forecasts predict that Kansai could drop below sea level by 2056 if it continues sinking at the current rate."Built on an artificial island, Japan's Kansai International Airport has sunk more than 13 metres since opening and could drop below sea level by 2056 if its current subsidence rate continues.
$20B
1.00