Elisha Gray (August 2, 1835 – January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company. Gray is best known for his development of a telephone prototype in 1876 in Highland Park, Illinois and is considered by some writers to be the true inventor of the variable resistance telephone, despite losing out to Alexander Graham Bell for the telephone patent.

Latest episodes of the podcast Nature's Miracles: Familiar Talks on Science by Elisha Gray

• 00 - Introduction
• 01 - Earth - Chapter I. World-building and Life
• 02 - Earth - Chapter II. Limestone
• 03 - Earth - Chapter III. Coal
• 04 - Earth - Chapter IV. Slate and Shale
• 05 - Earth - Chapter V. Salt
• 06 - Air - Chapter VI. The Atmosphere
• 07 - Air - Chapter VII. Air Temperature
• 08 - Air - Chapter VIII. Cloud Formation
• 09 - Air - Chapter IX. Cloud Formation (Continued)
• 10 - Air - Chapter X. Wind -- Why it Blows
• 11 - Air - Chapter XI. Wind (Continued)
• 12 - Air - Chapter XII. Local Winds
• 13 - Air - Chapter XIII. Weather Predictions
• 14 - Air - Chapter XIV. How Dew is Formed
• 15 - Air - Chapter XV. Hailstones and Snow
• 16 - Air - Chapter XVI. Meteors
• 17 - Air - Chapter XVII. The Sky and its Color
• 18 - Air - Chapter XVIII. Liquid Air
• 19 - Water - Chapter XIX. Rivers and Floods
• 20 - Water - Chapter XX. Tides
• 21 - Water - Chapter XXI. What is a Sponge?
• 22 - Water - Chapter XXII. Water and Ice
• 23 - Water - Chapter XXIII. Stored Energy in Water
• 24 - Water - Chapter XXIV. Why does Ice Float?
• 25 - Water - Chapter XXV. Glaciers
• 26 - Water - Chapter XXVI. Evidences and Theories of an Ice Age
• 27 - Water - Chapter XXVII. Glacial and Preglacial Lakes and Rivers
• 28 - Water - Chapter XXVIII. Some Effects of the Glacial Period
• 29 - Water - Chapter XXIX. Drainage Before the Ice Age