Grief is one of the most universal of human experiences and yet we don't talk

about it very much. Instead we're often left feeling alone with our sadness. That's why CNN's Anderson Cooper

is choosing to talk about grief, be direct with it in his new podcast. He talks with people

about those they've lost, the things they've left behind, and how we can coexist with loss, with love and with laughter.

Listen to all there is with Anderson Cooper on Apple Podcasts.

This is in conversation from Apple News.

I'm Shimita Bassasu. Today, how our understanding of cell biology is

redefining what it is to be human.

In 2010, six-year-old Emily Whitehead was diagnosed with A-L-L-L-A-L-A-L-E acute lymphoblastic leukemia. It's a blood cancer. It's extraordinarily aggressive, one of the most aggressive cancers that we know.

Siddhartha Mukerjee is a cancer physician

and researcher at Columbia University.

He's been following Emily's story for years.

A-L-L is the most common childhood cancer. Treatment involves about two years of an extremely

aggressive chemo regimen. 90% of pediatric patients with ALL end up being cured.

Emily, unfortunately, was not in the percentage that was cured by standard chemotherapy

she went through.

Second line was not cured, and then she relapsed again and that is or was

absolutely deadly. The chances of anyone surviving relapsed refractory, ELL was basically zero.

So Emily ended up being enrolled in a clinical trial

at the Children's Hospital of Philadelphia.

In this trial, Emily's own T cells were extracted, modified to recognize and

kill her cancer using gene therapy and then put back into her body.

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