What's cool about Kuuk Thaayorre is, in Kuuk Thaayorre, they don't use words like "left" and "right, " and instead, everything is in cardinal directions: north, south, east and west.

But the sun is at the horizon over here and we know that when the sun is at the horizon, say it's over on this side, there is a north-south, a huge pathway across the sky of polarized light that we can't see that the beetles can see.

And what you can see is that, in the decades after the Civil War, Congress was extraordinarily polarized, as you would expect, about as high as can be.

The current amputation paradigm hasn't changed fundamentally since the US Civil War and has grown obsolete in light of dramatic advancements in actuators, control systems and neural interfacing technologies.

And the only thing that stopped that, the government controlled four percent of the supply, and the only thing that stopped it was the Civil War breaking out, and the government suddenly wanted to take control of the money.

If that Martian looked at battlefields, they would find that people had only muskets at the time of the Civil War and that they had repeating rifles at the time of the Spanish-American War, and then they had machine guns by the time of World War I.

ES: So Bullrun, and this is again where we've got to thank the NSA for their candor, this is a program named after a Civil War battle.

The story, perhaps apocryphal, is that President Lincoln invited her to the White House in the middle of the Civil War and said to her, "So you're the little lady who started this great war."

Harriet Tubman worked as a Union army nurse, scout, and spy during the Civil War.

I never ran my train off the track, and I never lost a passenger.” As her fame grew, various friends and allies helped her in the fight to collect a veteran’s pension for her service in the Union Army.

RM: But what puts the Milwaukee flag over the top, almost to the point of self-parody, is on it is a picture of the Civil War battle flag of the Milwaukee regiment.

Racial discrimination, legally, had existed for 100 years, from 1865 at the end of the War Between the States, the Civil War, all the way up to the 1960s, when Lyndon Johnson got the bills passed for equal rights.

I learned that the Civil War was a nationalizing conflict, I learned some physics, I learned that correlation shouldn't be confused with causation -- all of these things, by the way, enriched my life on a literally daily basis.

During Reconstruction, when new African-American voters, new African-American citizens, began to exercise their power, they celebrated in jubilee parades that connected emancipation with their newfound right to vote.

Take a direct north-south bearing, you find to your astonishment that it bisects the intiwatana stone, goes to the skyline, hits the heart of Salcantay, the second of the most important mountains of the Incan empire.

A technology like that is a technology that worked for the founders, it worked for their grandchildren, it didn't work at the moment of the Civil War, but then it started working again.

She had no shortage of material: in the decades following the Civil War, Southern whites attempted to reassert their power by committing crimes against Black people including suppressing their votes, vandalizing their businesses, and even murdering them.

So we will be bringing Darfuri rebel groups, the Northern Cypriots and the Southern Cypriots, rebels from Aceh, and awful long laundry list of chaotic conflicts around the world.

Those are seals from many countries being released who are sampling underneath the ice sheets and giving us temperature data of oceanographic quality on both poles.