'Radioactivity' is a chemistry term.

And no trace of radioactivity.

Let's talk just a minute about radioactivity because I had an erroneous notion of what radioactivity was.

The radioactivity leaked out of the nuclear power plant.

I was just reading an article this morning saying they detected radioactivity in milk and I thought, of course they detected radioactivity in milk.

So your radioactivity is directly and inversely proportional to your half life.

There could be a meltdown, there could be a release of radioactivity.

In the ocean, what is the common point between oil, plastic and radioactivity?

The first clue to the origin of starlight happened as recently as 1899 radioactivity.

They don't really have long term radioactivity. They just decay too fast, it is the deal.

The article, of course, didn't mention that, which would make people think, Uh oh, my milk has gone from zero radioactivity to some radioactivity which must be bad and I must be in real trouble now.

You don't want to let anybody get too much radiation dose at any one time and the radioactivity that we get from nuclear reactors is extremely small in comparison to the radioactivity we're getting from other sources.

Marie Curie's daughter, Irene, also went on to win a Nobel prize for the discovery of artificial radioactivity.

If they did, we would be shutting down all of our coal and gas plants based on radioactivity alone.

It is responsible by far for the majority of the radioactivity that your body receives. It's just the planet we live on.

There are a few of them that have very long half lives but that means their radioactivity levels are extremely low and they just don't really pose a hazard.

More recently, the friendly galactics have been assisting Gaia in removing most of the depleted uranium and other forms of radioactivity from the air, mitigating the effects of disasters

And we replace the human being to go, for example, for measuring radioactivity, you don't want a human to be sailing those robots with batteries, motors, micro controllers and sensors.

He had planned on leaving Japan permanently, but his conscience got the better of him and instead of escaping he moved to Fukushima city and helped found the Citizens' Radioactivity Measurement Station.

Without needles and radioactivity, without any kind of clinical reason, we can go down the street and record from your friends' and neighbors' brains while they do a variety of cognitive tasks, and we use a method called functional magnetic resonance imaging.

The guy's got gloves on and it's easy to think he's got gloves on to protect him from the uranium oxide, but now that I've taught you about the true nature of radioactivity, you might go I'm not so sure that stuff's so dangerous after all, and you would be correct.