10 on Coral Jesus.

It is great to have you watching.

United Airlines and Delta Airlines are planning to ask travelers for some extra information in the days ahead.

They want people's names, phone numbers, email addresses and the places where they'll be staying after flying on a plane.

These air forms of contact tracing a method of gathering as much data about people as they or the law allows in an effort to track and prevent coronavirus.

America has not seen a major outbreak tied to a commercial flight, but they're also haven't been widespread.

Tracing efforts of airline passengers.

Here's how contact tracing works.

It aims to identify people who've caught Cove in 19, isolate them from others and then track down anyone else they've come in contact with who also might become infected.

But it's a controversial process that critics say invades privacy.

If it's based on your smartphone info, contact tracing could be used to follow you wherever you take it, how much time you spend there and who else you're there with.

Then the tracking system could also follow those other people wherever they go afterward, based on their smartphone info, could this become a form of mass surveillance?

Could it continue after the threat of Covad 19 has gone away?

And could the information be abused if it falls into the wrong hands?

These air all concerns critics have Supporters of contact tracing, which include the director of the U.

S.

Centers for Disease Control, say the process is fundamental for controlling the spread of communicable diseases like coronavirus.

Some have praised the nation of South Korea for its use of technology and tracking down coronavirus cases.

And in the capital of Seoul, you can see how many different elements are at work in doing that.

The lunchtime rush it a soul restaurant with almost every table taken.

One diner tests positive for coronavirus.

Search begins for who else may have been infected.

It starts with a phone call confirming the patient i d.

From a health official to an epidemiologist investigator.

Mobile phone and credit card checks follow Lee Young Oak, a contact tracer, and her colleagues physically retrace the footsteps.

The restaurant owner shows where the customer was sitting and shares the CCTV footage.

Lee checks who was close by and needs to be warned.

The owner and staff have already tested negative.

Lee makes it least 10 of these visits today, rarely finishing work before nine PM She tells me, the person having lunch with the confirmed cases, not wearing a mask and is a close contact.

He has been contacted, tested and quarantine for 14 days, with hundreds of new cases every day.

This work is becoming harder, with many cases now termed as untraceable.

If the mobile phone and credit card usage isn't quite enough to gain a full picture, then contact tracers contracted individuals movements.

Here at this CCTV center, they can find out exactly where a confirmed case went, who they met on Crucially, they say, whether they were wearing a mask.

More than 3000 cameras cover just this one sold district of Sokcho, normally used for crime prevention but now a key element in the fight against the coronavirus theme.

Mayor of Sacco says the reason this third wave is so difficult to contain is because infections are happening in all cities and district simultaneously up next.

Could we be at the dawn of a new space race?

China just completed another unmanned mission to the moon.

It's had several this century.

The United States wants to send people there again.

In 2024.

Private companies like Space X want to send humans to Mars, and others, like Planetary Resource is are looking toward asteroids as a possible source of income.

They believe that the value of precious metals and other materials on space rocks could far exceed the cost of sending equipment there and back.

But we're getting ahead of ourselves.

China recently followed in the footsteps of missions carried out by the United States and the former Soviet Union.

And for the Asian country, this is more than a technological accomplishment.

After blasting off from the moon on Sunday, China's probe now returns to Earth after a 23 day mission, bringing with it the first lunar samples collected in nearly half a century landing in Inner Mongolia that Chang 05 will become a piece of China's history.

It is only the third country to bring home such precious cargo.

Scientists will soon be analyzing the structure, physical properties and material composition of the soil and rock samples, hoping to answer long held questions about our nearest celestial body named after the mythical Chinese goddess of the moon.

The chunk of five mission could help explain the moon's origins, how long it was volcanically active and when it's magnetic Field, which protects life from the sun's radiation, disappeared.

But its objective was twofold.

One part discovery, the other to advance China's ambitions in space exploration, one of the most complicated and challenging missions in the country's aerospace history.

The four part chunk of five probe blasted off from an island off of China's southern coast on November the 24th.

It touched down seven days later on a part of a moon that has never been visited before.

A massive lava plain known as ocean of storms they're a lander began collecting samples with the drill and robotic arm before loading it onto an ascent vehicle, now sealed in a reentry capsule.

About 2 kg of the moon returned to Earth for the first time since the 19 seventies, possibly holding clues to ancient mysteries of the moon.

Christie loose Tell CNN Hong Kong 12th trivia.

Which US president signed the Federal Aid Highway Act, Franklin D.

Roosevelt, Harry S.

Truman, Dwight D.

Eisenhower or Richard M.

Nixon.

When the act passed in 1956 it was signed by President Dwight D.

Eisenhower.

It's time to buckle up and go for a ride in our last two stories today.

Earlier this year, when lockdowns were first being put in place in response to the coronavirus pandemic, we took you on a Siris of virtual vacations, visiting venues that for a while we're inaccessible, toe everyone and giving a glimpse of life in other parts of the world and more normal times.

In keeping with that spirit, we're going for a spin on a historic German road network today, a relic of the past that helped inspire future highways around the world, including the Eisenhower Interstate system.

We just asked you about CNN.

10.

Contributor Chris James explores the autobahn past and present.

Hey, Carl, there is nothing quite like the freedom of sitting in the driver's seat.

Give me an open road, a tank full of gas and my favorite music on the radio, and I will happily drive anywhere.

But today I want to tell you about the one roadway I've always dreamt of driving on the Autobahn.

It's arguably the most famous highway in the entire world.

The autobahn, which is German for car runway, connects the entire country of Germany, but it's much more than just your average interstate highway.

The autobahn has become something of a cultural icon, spawning artwork, movie plot lines and merchandise around the globe.

It's been made famous because there are certain stretches of the autobahn that have no speed limit whatsoever, with millions of drivers putting the pedal to the metal for nearly a century.

It was after World War One, when the idea to connect Germany's expanding cities initially took shape.

The first public road of its kind was completed in 1931 linking Cologne and Bond.

But years later, once Hitler rose to power, he tried to falsely take credit for creating the autobahn, even using it as a source of Nazi propaganda.

But this is the real father of the autobahn, Konrad Adenauer, then mayor of the city of Cologne and later the first chancellor of Postwar Germany.

An expansion program on the highways began in the 19 fifties, and during the Cold War.

Some stretches of it were designed to function as makeshift airfields for allied troops in case of a Soviet invasion.

Today, the autobahn stretches over 8000 miles, ranking it among the longest and most dense road systems in the entire world.

Pretty amazing to think about the ways in which this one highway influenced the future of transportation as we know it.

Back to you, Carl.

Definitely a 21st century idea you call a taxi, and this thing shows up without a driver.

There are several companies working on electric self driving vehicles.

Google is one of them.

Amazon owns the one you see here.

It has air bags, cameras and radar designed to keep people safe, and it can travel up to 75 MPH.

But though it's being tested, it's not actually in operation yet, and several questions remain.

Could it kill jobs for taxi uber and Lyft drivers?

What if you're in a hurry or you don't like the route?

It's chosen.

The technology is just hitting the road.

There are a lot of different directions.

It could go.

And while some introverts might like the idea of going driverless, it could drive some extroverts.

Car are easy, so we'll see if and when it gets in gear.

If it's a signal of wheel change or if it's a wrong turn that never gets seated in shifting opinions, even though it's meant to be out of gas.

Y'all, our goal Is this for CNN.

10.

Lakota, North Dakota is our last stop.

Today.

It's the home of Lakota High School.

It's great to see you guys.

We have one more show to go in 2020 and we hope to see everyone right back here tomorrow.