Pete Ross

Then the whole tunnel's filled with clay and then plugged.

Mankind has never made anything that's lasted that long, I suppose.

How can you be confident that once your canisters of spent waste are down here, they are isolated, gone, we can essentially plug the hole and forget about them?

My confidence lies there that there is decades of research done for this system.

So we know exactly what our network is like and we know what kind of waste we have.

You're pretty confident that this is a secure place to lock away hazardous nuclear waste?

Yes, we are.

Yes, we are sure of that.

That report by Victoria Gill.

Still to come in this podcast... We've discovered metals, carbon monoxide, other strange chemicals.

It's been a wonderful, wonderful study for astronomy.

We settle the debate gripping the internet.

Is 3I Atlas a comet or an alien spaceship?

I would have done anything to get the medicine for Khalil.

I want to be a normal kid.

I want to go to school.

They were going to upload it to social media.

Millions of dollars pour in, but the families never receive the money.

He told us it wasn't successful.

As I understood it, the video just didn't make any money.