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Dopamine molecule; a represent neurotransmitter. Dulls pain and encourages happiness; its that feel good sensation when you step into the sun or bite into a chocolate bar.

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This graphic looks at the elements known as the lanthanides - the ones stranded at the bottom of the periodic table, along with the actinides. For a group of elements that doesn't really get much a...

Element Infographics - The Lanthanides