As a heavy metal, it is also chemically poisonous in addition to being radioactively poisonous.

BBC: News Online

The chemical composition of paints has been examined, and some paints have even been radioactively dated (it is the lead content that is key here).

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Bacteria would still be able to live in hydrothermal vents at the bottom of the oceans, kept going by heat generated radioactively in the earth's crust.

ECONOMIST: To the ends of the earth

"Twenty-six years after the Chernobyl catastrophe, hundreds of villages and towns remain radioactively contaminated and millions of people, many of whom are children, live in these areas, " said Walsh.

CNN: UEFA has no plans to make Chernobyl donation

The Helium found in Natural Gas is there simply because Thorium and Uranium are radioactively converting the hydrogen in these fossil fuels into Helium, but this takes millions of years.

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CD20, called tositumomab, is radioactively labelled.

ECONOMIST: Cancer therapy