Lars Ernster, a Swedish biochemist, and U.S. Rep. Tom Lantos could have died as boys. But they were among the 100,000 people Wallenberg saved in Hungary by creating diplomatic passes and safe houses, where Jews could live under Sweden’s protection. He once climbed on a train’s roof, handing protective passes to Jews heading to camps. Swedish-born, Wallenberg is an honorary citizen of the U.S., Canada, Hungary, and Israel, Numerous parks, monuments, and stamps honor him throughout the world; schools and streets are named for him.