When my mother was born in the 40's.....no one in the world but a very few, knew what strontium 90 was. It was rare.
In the 50's they started testing Nuclear weapons.
Now everyone on the planet has a bit of Strontium 90 in their system.
When my mother was born in the 40's.....no one in the world but a very few, knew what strontium 90 was. It was rare.
In the 50's they started testing Nuclear weapons.
Now everyone on the planet has a bit of Strontium 90 in their system.