3 ideas from Alfred Russel Wallace, each explained in a minute and credited to the original work. Free on Savvy.
Alfred Russel Wallace, working in Indonesia, mailed Charles Darwin an essay describing natural selection — the same theory Darwin had quietly developed over twenty years. Rather th…
— Charles Darwin and Alfred Russel Wallace, On the Tendency of Species to form Varieties
Crossing the Lombok Strait between Bali and Lombok, naturalist Alfred Russel Wallace noticed the animals change abruptly: tigers, monkeys and woodpeckers to the west, cockatoos and…
— Alfred Russel Wallace, The Malay Archipelago
While mapping species across the Malay Archipelago, Alfred Russel Wallace noticed that islands only tens of kilometers apart had starkly different wildlife -- tigers and monkeys to…
— Alfred Russel Wallace, The Malay Archipelago