Density: Float an Egg

What happen if you put an egg into a container of water? 

It sinks.

How can you make it float? 

You need to make the egg less dense or the water more dense.

I don't know how to readily change the density of an egg, but I do know how you can make the water more dense: SALT. 

Start adding salt a tablespoon at a time.  It takes a bunch of salt, so don't give up.  Eventually, there will be enough salt dissolved in the water and the egg will float. 

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A Note:
Don't be all fancy and use kosher salt.  Regular old salt works better - the smaller size makes it dissolve easier. Go ahead, ask me how I know (and then look at the picture above to find the answer).