<color=green>"For an object to be contaminated, or irradiated, from radioactivity it has to be a significant amount of radiation. It also has to be the right type of radiation. For radioactive sources, touching the object just means that you're a whole lot closer to the source. And that means the amount of radiation you receive is much greater. Sort of like getting much warmer if you were closer to a campfire than if you were farther away. But touching a radioactive substance is ill advised, because if it's brittle, it could easily get on to your skin. And that will be even more hazardous if some of that gets through a break in the skin, like a cut. And from that, certain particles, which cannot pass through the skin, can now get inside and cause serious harm."
She took a breath to continue.
<color=green>"Fortunately though, EMily has not picked up any gamma rays coming off of Joel, which are the most penetrating. And I haven't picked up any signs of beta decay. Which probably means he's emitting alpha particles. Those will not pass through the skin unless you have an unsealed cut."