How much of the earth is covered with the Pacific Ocean? It’s big. If you stand at San Francisco’s Ocean Beach and want to point to the far shore of the ocean, you could point out to sea.

But we can think of it another way. To point through the globe to the far shore, you’d point to the sand one stride ahead of you. The Pacific is that big. You could reasonably say it goes almost all the way to the other side of the world.

If you are, say, […]