There is a lot of dangerous, radioactive water inside Fukushima, as TEPCO struggles to keep the fuel rods from burning up. Water accumulates - TEPCO estimates there are 67,000 tons of irradiated water inside.
How much water is that? 67,000 tons is a tricky amount to visualise - but it's enough to fill 27 Olympic-sized swimming pools. Splish splash. Makes it a bit easier to wrap your head around just how difficult of a problem TEPCO faces in disposing of this stuff. Let's hope they think of something better than just dumping it into the ocean.