compoundchem: With autumn on the horizon, this graphic looks at the chemicals behind the myriad colours of autumn leaves; bigger version &amp; download here: http://wp.me/p4aPLT-sn

compoundchem: With autumn on the horizon, this graphic looks at the chemicals behind the myriad colours of autumn leaves; bigger version & download here: http://wp.me/p4aPLT-sn

compoundchem: With autumn on the horizon, this graphic looks at the chemicals behind