The most radioactive room in the world is the Infinity Room, found in the former Rocky Flats area, (Colorado) the room was (is) so radioactive that it was impossible to measure with any technology, hence the name "Infinity Room." Since the government didn't want ten foot tall deer and coyotes with two heads they poured cement into the underground wasteland sealing it off from the rest of the world.
This room became so radioactive because there was a fire that took place in the Infinity room that caused a Uranium spill, it made the room so radioactive that not only could they measure it, they couldn't even walk inside it even with the strongest radioactive suits.
The most radioactive and actually considered the most polluted place on earth is lake Karachay in Russia bordering the Ural mountains. http://en.wikipedia.org/wiki/Lake_Karachay
Because plutonium is very toxic, radioactive, flammable and explosive.
of course
The heat that drives mantle convection comes from the colling of Earth's interior and the decay of radioactive isotopes
it can kill the earth and even us if there is to much
The core.
Raamsar, Iran
Earth has internal energy due to radioactivity. I am not sure what you mean by radioactive external energy, or simply by external energy. Earth gets most of its energy from the Sun.
Most of the heat comes from radioactive particles decomposing
Radium is the radioactive metal among alkaline earth metals.
The Most Secret Place on Earth was created in 2008.
The most common isotope of Argon, 40Ar, accounts for just under 1% of the Earth's atmosphere. Most of this comes from the radioactive decay of Potassiom-40 in the Earth's crust.
Hydrogen has only one natural radioactive isotope(3H), of cosmogenic origin, but only in ultratraces on the earth. Sodium has two radioactive natural isotopes (22Na and 24Na), of cosmogenic origin, but only in ultratraces on the earth. Oxygen has not natural radioactive isotopes. All the isotopes of uranium are radioactive.
Because plutonium is very toxic, radioactive, flammable and explosive.
The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.
The core of the earth is radioactive, as is the sun. Granites, which crystallize from mantle material are commonly slightly radioactive.
The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.The decay of radioactive isotopes.
The most northern place on earth is the North Pole. If this is grow then good luck!