Hello, I'm Megan Lawton and welcome to Business Daily from the BBC World Service.

It's a hot day here in Toronto, in Canada.

I'm at a park where there's a splash pool full of kids keeping cool and people sheltering under trees to get shade.

It is 30 degrees right now, but the humidity makes it feel hotter and stickier.

Now, this city is one of many where temperatures have been rising. I want to know how weather like

this impacts our productivity. I had to have a nap before I got out to do this market. And I just,

it's really affecting my brain a little bit.

From factories to restaurants, some businesses are struggling to keep workers safe,

with temperatures rising to the highest levels in history.

But the humidity affects people, I think, a lot more and just kind of saps the energy from you.

In some parts of the world, companies are already introducing new measures to protect their workers.

I got $14 as insurance money.

It helped me buy food for my family and medicines for myself.

In this program, we'll hear from those trying to adapt to rising temperatures and others who are more familiar. On June 23 of this year, the Kuwait City recorded temperature of 53 degrees Celsius.

As well as learn about the impact heat waves are having on our economies.

There's tremendous economic consequences to societies all around the planet as these temperatures rise.

That's all coming up on Business Daily from the BBC.

We're starting here at a food market in Toronto.

Come rain or shine, these stallholders are out every week.

In the summer months, they often struggle to keep

themselves cool as well as their produce. My name is Alan. We do organic chicken products as well as

eggs. And then we also do organic vegetables and herbs. So we have beautiful as this kind of kale

...