There's a strange phenomenon we might all experience, but don't often acknowledge.

When there is some sort of mass tragedy like a shooting or an earthquake, the first few

deaths we learn about are incredibly emotional for us.

We empathize with those people who are suffering, often strangers.

Maybe we even feel moved to take action to provide aid.

But sometimes, once the number of people suffering starts to grow, we also begin to

feel less and less.

This gradual, emotional detachment is actually part of being a human, and right now, nearly

all of us are experiencing it to some degree during this pandemic.

Around the world, more than a million people have now died from the coronavirus, one million

people.

Rationally, we know this is devastating, but emotionally, why can we feel so removed from it?

The answer it turns out may have something to do with a concept called compassion-fade

and an experiment that reveals some of our most surprising moral intuitions about whose

lives are most worth saving.

I'm Dr. Sanjay Gupta, seen in chief medical correspondent.

And this is coronavirus, fact versus fiction.

Some of the groups that people were most biased against in our experiment are also the people

who are most vulnerable to the pandemic.

Azim Sharif is an associate professor of social psychology at the University of British Columbia.

In 2016, he and some colleagues launched this experiment called the Moral Machine.

They asked people around the world to play a computer game that generated a series of

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