Meet Lukas Walton, the fiercely private heir to the Walmart empire who has donated millions from his fortune to find solutions to environmental problems
· *Lukas Walton, 33, is the grandson of Sam Walton, the American businessman who created the Walmart empire.*
· *After his father, John T. Walton, died in a place crash in 2015, Lukas reportedly inherited a third of his fortune.*
· *As of February 18, 2020, the Bloomberg Billionaires Index lists Lukas as the 59th richest...