(ScienceAlert) The radiation levels inside Japan’s damaged Fukushima Daiichi nuclear reactor No. 2 have soared in recent weeks, reaching a maximum of 530 sieverts per hour, a number experts have called “unimaginable”.
Radiation is now by far the highest it has been since the reactor was struck by a tsunami in March 2011 – and scientists are struggling to explain what’s going on.
The previous maximum radiation level recorded in the reactor was 73 sieverts per hour, a reading taken not long after the meltdown almost six years ago. The levels are now more than seven times that amount.
Exactly what’s causing the levels to creep upwards again is currently stumping the Tokyo Electric Power Company (Tepco). But the good news is that they say the radiation is safely contained within the reactor, so there’s no risk to the greater population. *wink*