Feel free to update those search engine results, troll. They don’t respond with “it’ll be dangerous for 3 half-lives of fill_in_the_blank”, they respond with
It’ll be dangerous for 20,000 years.
Fix it. Troll.
You really think anyone google has any interest in any alternative views to their (among others) anti-nuke agenda?
I see you’ve taken my advice to switch to “20,000 years”.
I’ll see if I can find you a reference to 250,000 years (I’ve seen those, too).
And I never said “It’ll be dangerous for 3 half-lives...”, I said “In 30 half-lives, it’ll be down to one billionth of the original strength”.]
For a ~30-year half-life, such as strontium-90 and cesium-137, that’s 1000 years; not 10,000 or 20,000.
I didn’t intend to be a troll, but you’re making it fun.
At least I’m a troll who understands “half-life”.