radioactivity

We know radioactivity clearly kills at high doses, but the effects of low doses are largely undetermined.

Yup, the funny thing about coal is even from radioactivity perspective it's worse than nuclear.

And people fly all the time and take CT scans in hospitals without realizing that they get more radioactivity exposure this way.

There ARE in fact many natural sources of radioactivity, that we have been eating for quite some time, with never a though of cancer.

But guess which one emits more radioactivity into the environment?

The low level radioactivity was easily removed from affected personnel by washing with soap and water.

We have an instinctive aversion to radioactivity, because it's strange and invisible, but it's just energy.

Pacific Ocean is so large that it can dilute huge amount of radioactivity, but bioaccumulation changes the story.

You can't make a material that is both intensely radioactive and stays around forever, because it's the radioactivity itself that makes it go away.

Coal plants actually produce titanic amounts of radiation, vastly more than nuke plants, thanks to impurities in coal, and that radioactivity is going straight into the atmosphere [2].

Heavy radioactive metals like uranium and thorium are toxic heavy metals, but negligible radioactivity, precisely because their half lives are so long.

"If theres a secret to this superhero-level productivity, it appears to have less to do with comic-book mutation and radioactivity, and far more with discipline, confidence, rigor, and many years of practice.

"Using sensitive instruments, precautionary measurements of three helicopter aircrews returning to USS Ronald Reagan after conducting disaster relief missions near Sendai identified low levels of radioactivity on 17 air crew members.

Since the Reagan is nuclear-powered, it has sensors to detect radioactivity, said Martin, and those went off as soon as the radiation levels went above the naturally-occurring background....The aircraft carrier USS Ronald Reagan was about 100 miles offshore when its instruments detected the radiation.

However, a simple calculation show [26] that even if all the world's electric power were generated by plutonium-fueled reactors, and all of the plutonium ended up in the top layers of soil, it would not nearly double the radioactivity already there from natural sources, adding only a tiny fraction of 1% to the health hazard from that radioactivity.