Recently we had a severe 8.9 earthquake in northern Japan followed by a very destructive tsunami. The Fukushima nuclear power plants were severely damaged. Highly radioactive materials escaped into the atmosphere and surrounding areas contaminating the air, land and the sea water. Some points were brought up in the news that I don't understand. How long exactly does it take, for dangers, due to nuclear leaks like this, to disappear?
After the Hiroshima and Nagasaki atomic bombs explosions in 1945, these cities were supposed to be uninhabitable for at least 100 years because of the half life cycle of radio active Uranium 235 isotopes. Yet after less than 60 years, we see that both these Japanese cities have been rebuilt and are thriving and full of healthy inhabitants! Something is not right here. Our scientists, either cannot count properly or they are not telling us the whole truth. Similarly, a lot of untruths were circulated during the Chernobyl and Three Mile Island "accidents".