Radium and radon are important contributors to environmental radioactivity. Radon occurs naturally as a result of decay of radioactive elements in soil...

Radon isotopes are the immediate decay products of radium isotopes. The instability of radon-222, its most stable isotope, makes radon one of the rarest...

such as radon and radium are of note. While all actinides are radioactive, there are a lot of actinides or actinide-relating minerals in the Earth's crust...

cosmic radiation, radioactive substances such as radon and radium found in the environment, and the potential health hazards of non-ionizing radiation...

consume oxygen. The breakdown of phytoplankton in the environment depends on the presence of oxygen, and once oxygen is no longer in the bodies of water...

Radium is a chemical element; it has symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline...

Some pollutants are biodegradable and therefore will not persist in the environment in the long term. However, the degradation products of some pollutants...

Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of any substance (solid...

in the Vietnamese environment since the war, settling in the soil and sediment and entering the food chain through animals and fish which feed in the...

char. Soot causes various types of cancer and lung disease. Soot as an airborne contaminant in the environment has many different sources, all of which...