Martin Cooper changed the world when he pioneered the portable phone. The Motorola company’s four-pound box has evolved into a global army of powerful smartphones weighing ounces.

41. William Henry Harrison, 26.01 42. Franklin Pierce, 24.6 43. Andrew Johnson, 21.56 44. James Buchanan, 16.71 45. Donald Trump, 10.92 Note: This article was updated to correct Martin Van Buren's ...