Karachi is a city sharply segregated by class. Upper- and middle-class people tend to stay in their districts, while the poor and working-class stick to theirs. Naturally, the heat wave hit the working-class and poorer districts hardest, due to the lack of AC.

"The general masses only became aware of the deaths via the media," Taha explained. "Of course everyone notices the heat (ACs, especially those in cars, need to be turned up to 11. Also people do have to travel to and fro, so the heat is noticed even when its brunt isn't borne). The initial death toll started off with a figure of less than 20 on the television, and then kept on rising as time went by."

The authorities were aware of the deaths, but did virtually nothing in the early days of the heat wave because, and we're paraphrasing here, "Oof, it's too hot out there."

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"Of course the authorities are notified when people die of a heat stroke in a hospital or are being treated of such. So pinpointing the exact time the 'authorities' found out is impossible -- especially since the 'authorities' are three layers of government and an entire plethora of bureaucracy to boot."

Now, while the poor and working-class may not have AC, they usually have access to fans, and they can drink water, right? It's not like they were out wrestling in a parking lot somewhere. How do you let something like heat kill you? Well, as a cruel coincidence, the heat wave struck at exactly the wrong time ...

Experts call tree-less heat sinks like this "urban heat islands". You might be thinking: "Gee that sounds like a really bad thing to have if you happen to get hit by a freak heat wave." If so, you'd be right. Normally, heat from the sun stores up in asphalt and other urban building materials, and then dissipates at night. But during the summer, the days are longer, so the heat doesn't get a chance to fully escape. The sun comes up and bakes the city some more, and it gets hotter and hotter. When this is happening in areas with no shade -- especially with narrow streets and crowded marketplaces -- these areas become like that cup of coffee you keep forgetting about and re-microwaving.

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Then, to make things worse, K-Electric, Karachi's electricity provider, crapped out on the first day of the heat wave due to excess demand for power. That first day of the heat wave also coincided with the beginning of the Muslim holy month of Ramadan, and the fast that comes with it. The thing about fasting during Ramadan is that it's not limited to food. You also don't drink anything from sun up to sun down. It was like the Perfect Storm, but with less Marky Mark and a higher death toll.

Of course, like many other requirements for Muslims, there are exceptions to the fasting rule -- typically for the elderly, the sick, pregnant women, and young children. As Taha explained, however, there can be a sort of Halal-er than thou attitude among some people in Karachi. This means that while people might break the fast in private, they don't want to be seen doing it in public. Even an influential Islamic cleric issued a fatwa reminding people that the fast can be broken in case of a medical condition, but by that time, hundreds had already died. Sometimes pride ain't worth a nice cool glass of water, folks.

By far the worst situation, though, was the lack of space in the morgues. A senior hospital official reported that bodies were being piled on top of each other. And without any space left inside the morgue, there was no choice but to start stacking them outside. In one of the worst heat waves ever reported. Reading Rainbow may have taught you all about the power of imagination, but it's probably best not to use it on that smell.

Taha says that a grave plot is often a bargain, sold for the equivalent of 15 USD. But like a morbid version of Uber, graveyards responded to the demand by jacking up their prices several times, all the way up to 150-500 USD. For many of the bereaved, 150 USD is an entire month's salary. With the demand for grave plots and their prices soaring, there was only one logical solution: communal graves. Over 500 mass graves were dug to handle the corpses, with some holding as many as 100 bodies.

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Of course, before you can bury a body, it needs to get to the morgue, and that requires transport. Karachi has a fleet of funeral vans for this purpose, but supply was really short. People had to improvise. But those vans are special vehicles, and dead bodies need to be kept at a low temperature, or things get seriously gross in a hurry. How are you going to improvise a fleet of vehicles big enough to hold bodies with onboard refriger-- oh god.

Yep, food delivery trucks were pressed into service as makeshift hearses.

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Imagine getting pulled over while performing that service. No cop in the world would believe your excuse as to why you have corpses in the back of your ice cream van.