John Tyndall, an English experimenter, demonstrated one before Alexander Graham Bell invented the telephone.

FORBES: The Trials Of Amory Houghton Jr.

In 1863 the Irish scientist John Tyndall determined that carbon dioxide and water vapor trapped more heat in the atmosphere as their concentrations increased.

FORBES: A Call to Arms on Climate Change

Nearly a century ago, the British scientist John Tyndall suggested that a fall in the atmospheric carbon dioxide could allow the earth to cool whereas a rise in the carbon dioxide would make it warmer.

FORBES: A Call to Arms on Climate Change