4 ms·
Caesium-137 has a 30 year half life. If that blew into Tokyo, the city would be uninhabitable for 200 years - just like Chernobyl.
by hop 16y ago
Caesium-137 has a 30 year half life. If that blew into Tokyo, the city would be uninhabitable for 200 years - just like Chernobyl.