It is outstanding....but understand much of the science is fiction
SPOILERS
A helicopter did not crash due to radiation. Three men did not sacrifice their lives to drain radioactive water. No pre-born baby died due to its mother's radiation.
All that stuff, and a lot more, is pure Hollywood.
Still a great watch, though.
'I define fear as standing across from Joe Louis and knowing he wants to go home early.' - Max Baer