Baxter, Stephen. "What If…?"
Summary: Magazine article gathering eight short allohistorical scenarios/speculations, including 1) the Moon didn't form, 2) no dinosaur extinction, 3) Rome never falls, 4) flight discovered in the ninth century, 5) no Black Death, 6) Germany wins World War II, 7) Cuban Missile Crisis explodes, and 8) Apollo program goes to Mars.
Published: In BBC Focus #168 (September 2006).