How Much Does an Amber Cost?

...attempts made in the market to sell amber ‘simulants’ as genuine amber. Simulants of this gem include ambroid, copal resin, kauri gum, dammar, celluloid and plastic. These simulants would normally...

Urbanization and Population

...and energy within the physical materials caused pollutant and found that plastic bags were safer for the environment. Another example are the issues of disposable diapers. Although disposable diapers are...