The Earth Is Not Flat

A friend passed me a link to this video:

Eratosthenes calculated the earth’s circumference to be 250,000 stadia. That would be a circumference of roughly 24,662 miles, which is very close to the modern value of 24,901 miles. He made his findings over 2,000 years ago with only the most primitive of tools.

The flat earth theory is still alive:

Members of the Flat Earth Society claim to believe the Earth is flat. Walking around on the planet’s surface, it looks and feels flat, so they deem all evidence to the contrary, such as satellite photos of Earth as a sphere, to be fabrications of a “round Earth conspiracy” orchestrated by NASA and other government agencies.

Yes. There is a Flat Earth Society.

And, from the Atlantic:

When I first heard that rapper B.o.B apparently believes the Earth is flat, I sighed the weary sigh of a science writer facing down an anti-science culture. Evolution, climate change, vaccines, and now #FlatEarth? “Are you kidding me?” I thought. Will Americans insist on rejecting everything that 100 percent of scientists agree on?

I was doing interval training on the bike today. Inside. The training video was climbing hills.

And then a thought came to my mind. What hills? I am riding on a stationary spin bike. On a flat and level surface.

The conclusion is obvious: the earth must be flat.