Because of the past position of the continents, the Pacific side of our planet is releasing more heat from Earth’s interior than the African side

Volodymyr Goinyk/Alamy

Our planet is a bit lopsided. One half of Earth is losing heat from the planet’s interior faster than the other, and has been for much of the past 400 million years.

The uneven heat loss is probably a relic of past supercontinents, when all the land masses were joined together on one side of the planet.

“We see that the Pacific has lost more heat,” says Krister Karlsen at the University of …