Oliver Conway

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.

World of Secrets, the child cancer scam from the BBC World Service.

Listen now wherever you get your BBC podcasts.

Discover brilliant podcasts from the BBC World Service.

A string of victims across the US stretching from coast to coast.

The amount of victims in such a short time was unbelievable.

From the BBC World Service, this is Cyberhack Evilcore.

The story of a cybercrime case that stretches from small-town America to the back streets of Moscow.

This is the Global News Podcast.

Research has found that living in extreme heat can severely affect children's development.

A study looked at data collected by the UN Children's Agency UNICEF from six mostly African countries.

Richard Hamilton has the details.

It's long been known that excessive heat affects physical health, but this study shows that children who are regularly exposed to temperatures above 30 degrees Celsius tend to know fewer words, letters and numbers.

It suggests that global warming is harming human development at its earliest stages.

An average monthly maximum temperature of 32 degrees or more reduces the likelihood that three- and four-year-olds would be developmentally on track by up to 12%.

The lead researcher is Professor Jorge Cuartas from New York University.