Heating - The Curious History of Your Home

Summary

Summary of "Heating" Episode from The Curious History of Your Home

Episode Title: Heating
Host: Ruth Goodman
Release Date: September 16, 2024

Introduction: The Power of Fire in Human Evolution

Ruth Goodman opens the episode by illustrating the pivotal role of fire in human evolution. She narrates a vivid scene from 50,000 years ago, depicting Neanderthals mastering fire in a limestone cave in what is now Dordogne, France. This ability to create and control fire not only provided warmth and protection but also fostered social cohesion, language development, and dietary advancements.

Ruth Goodman [01:04]: "The ability to create and control fire transformed the way we live and who we are."

Early Use of Fire: From Homo Erectus to Homo Sapiens

Goodman traces the origins of fire use back to Homo erectus, citing archaeological evidence from Wonderwork Cave in South Africa, where remains indicate controlled use of fire over a million years ago. This early mastery facilitated significant evolutionary developments, including increased brain size and the transition from raw to cooked food.

Ruth Goodman [02:15]: "Fire kept us warm at night. It kept predators at bay and stopped us freezing to death during harsh winters."

Fire in Domestic Spaces: Hearths and Early Homes

As Homo sapiens moved from nomadic lifestyles to building permanent dwellings, fire remained central to domestic life. Goodman describes how early houses, such as Bronze and Iron Age round houses in Britain and Viking longhouses, were designed around communal hearths. These central fires were multifunctional spaces for cooking, crafting, and socializing.

The Introduction of the Chimney: Transforming Domestic Architecture

The shift from open hearths to chimneys marked a significant transformation in home design. Initially a novelty in the 12th century, chimneys allowed smoke to escape efficiently, enabling the construction of smoke-free upper floors. However, Goodman points out that this innovation required more fuel to maintain heat, leading to smaller, individually heated rooms.

Ruth Goodman [10:45]: "Chimneys transformed the domestic space. We no longer had to live in a perpetual fog of smoke."

The Hearth Tax: Socioeconomic Impacts of Chimney Adoption

In 1662, King Charles II introduced the Hearth Tax to address national debts, taxing households based on the number of fireplaces. Goodman explains how this tax disproportionately affected both the wealthy and the poor, leading to methods of tax avoidance and widespread resentment.

Ruth Goodman [14:20]: "The hearth tax was fiercely resented by homeowners of all classes."

Chimney Sweeps and the Exploitation of Children

The implementation of chimneys gave rise to the dark trade of chimney sweeping. Goodman delves into the grim history of "climbing boys," young children forced into dangerous labor to clean soot from narrow flues. Legal attempts to curb this practice were initially ineffective, resulting in severe exploitation and numerous fatalities until the practice was outlawed in 1875.

Ruth Goodman [20:30]: "In reality, it was akin to slave labour. The boys were often kidnapped or sold by their parents and kept in terrible conditions."

Transition to Central Heating: Ondol and the Hypocaust System

Contrasting Western heating developments, Goodman highlights ancient Korean and Roman innovations in underfloor heating—ondol and hypocaust systems, respectively. While these methods provided efficient warmth, they were largely forgotten in the West after the fall of the Roman Empire, reverting back to centralized open fires until technological advancements in the late 19th and 20th centuries.

The Great Smog of 1952: Catalyst for Clean Air Legislation

Goodman recounts the catastrophic Great Smog of London in 1952, a severe air pollution event primarily caused by domestic burning of cheap sulphurous coal. This disaster resulted in thousands of fatalities and prompted the introduction of the Clean Air Acts of 1956 and 1968, leading to cleaner fuels and the modernization of heating systems.

Ruth Goodman [24:50]: "Despite the severity of the event, everyone remained calm. After all, these were the people who had lived through the Blitz."

Rise of Central Heating and Modern Home Design

Post-smog, central heating systems became widespread, significantly altering domestic life and architecture. Goodman explains that while central heating enabled open-plan living spaces reminiscent of communal longhouses, it paradoxically led to more isolated family dynamics as each member could retreat to their own heated room.

Ruth Goodman [25:30]: "Now, that the whole house could be heated equally, family life would never be the same again."

Conclusion: The Evolution of Heating and Its Impact on Society

Goodman concludes by reflecting on how heating technologies have continually reshaped human living spaces and social structures. From the communal fires of early humans to the individualized rooms of the modern home, the history of heating is intertwined with broader societal changes.

Ruth Goodman [26:10]: "Central heating allowed houses to be opened up once again. In theory, the whole family could gather in an open plan living space, just like in a Viking longhouse."

In previewing the next episode, Goodman hints at exploring the history of bread, promising intriguing stories about its cultural and societal significance.

Ruth Goodman [26:50]: "In the next episode, we get stuck into the history of bread. In 18th century France, the rising price of flour sparks popular unrest..."

This episode of The Curious History of Your Home delves deep into the evolution of heating, showcasing how advancements in fire management have profoundly influenced human society, architecture, and daily life.

Transcript

Narrator (0:01)

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Ruth Goodman (1:04)

50,000 years to the Middle Paleolithic period. We're in a deep limestone cave set in a spectacular landscape. The steep walls of a rocky gorge rise above a fast flowing river. A dense primeval forest crowns the cliffside. This region will one day be called the Dordogne, in a country called France, but for now it has no name. There are no nations, no boundaries, not even villages or man made dwellings. There is just the land and the creatures who live on it and take shelter within it. This is a time before human beings as we know them reached Europe. But there are people here in the cave, recognisably human figures, though their features differ from our own. Their low foreheads slope back from a prominent ridge at the brow. Their skulls are elongated, their faces rounded, with large, wide noses and protruding teeth. Like us, they walk on two legs and have hands with opposable thumbs which allow them to hold and manipulate objects. Their clothes are made from animal skins. They carry shaped flints that they use as tools for all kinds of tasks scraping, cutting, cutting, slicing, even woodworking. They have other objects too, for example, the toe of a giant reindeer, marked with a series of notches. One day archaeologists will study remains like this and see in them evidence of symbolic thought and artistic expression. These are Neanderthals. The cave is dark and cold, but it provides shelter from the storm that rages outside. One of the figures, a female, crouches down. She breaks up a soft brown substance that she has gathered earlier from the Forest. We call it hoof fungus. We don't know if she has a word for it, but she is certainly able to identify it and knows what it can be used for. She crumbles the fungus onto the cave floor. Then she uses a flint tool to scrape some flakes of a naturally occurring mineral that we call manganese dioxide over it. Next, the woman picks up a flint. In her other hand, she holds a lump of hard, shiny material. We know it as pyrite or fool's gold. She holds the flint over the bed of fungus and strikes the pyrite against it. She keeps hitting the two objects together, each time scraping the surface of the flint with the mineral, building up a regular rhythm in the canvas gloom. She watches the flakes of fungus closely. At last, she sees it. A tiny spark of light leaps from the flint and falls onto the fungus, causing it to smoulder. The spark blossoms into a soft glow. You see, the fungus is a highly effective tinder, made even more combustible by the particles of manganese dioxide, which have the effect of lowering the temperature at which it ignites by about 100 degrees centigrade. The woman blows gently on the nascent flame. She then carefully places the glowing tinder inside a pile of twigs and branches, skillfully coaxing a fire into life. A rich orange glow flickers on the walls of the cave, a dance of light and shadow. The warmth draws her companions towards it, binding them together as a group. A tribe. The storm outside is forgotten. I'm Ruth Goodman. I've spent my life exploring the extraordinary history of everyday items, the little things that we often take for granted. You see, every object in your home has a fascinating hidden history, a story that's just waiting to be told. This week, we're exploring the hot historical topic of heating. So come with me, and together we'll explore the curious history of your home. The ability to create and control fire transformed the way we live and who we are. Early humans came together around cave fires and campfires. In the process, we became social animals. We acquired bigger brains. We developed language and learned to cooperate. Language also meant we could pass on our experience and knowledge to future generations. Our bigger brains required more energy, and that, too, was aided by fire. Our diet improved as we moved from eating raw to cooked food. Fire kept us warm at night. It kept predators at bay and stopped us freezing to death during harsh winters. It drove migration, as we were now able to move into colder climates, expanding the territories we could survive in. Archaeologists believe that the ability to make fire came very early in the story of human evolution even earlier than Neanderthals, who died out around 40,000 years ago. Remains of burnt bones and plants from Wonderwork Cave in South Africa prove that fire was being used as far back as a million years ago. This was the time of Homo erectus, the common ancestor from which both Neanderthals and Homo sapiens separately evolved. Eventually, Homo sapiens, that's us, moved from living in caves to building our own dwellings. Fire occupied a central place in these new homes, almost as if houses were structures built around campfires to contain the comforting glow they gave off. In Bronze and Iron Age Britain, the dominant structure was the round house, while for Vikings, it was the long house. In both societies, the the hearth was the focus of communal living. Activities such as craft working, storytelling, preparing food and feasting took place around a central fire. Bear in mind there were no chimneys at this time. The smoke just drifted up and seeped out through the thatch, or turf roof. We can find a similar way of living among the First Nation Haida people. They have lived in what is now British Columbia, Canada, for possibly the last 10,000 years. Their communal houses were a thing of beauty. The front was ornately carved with a massive totem pole rising up in the middle. The fire was in the centre of the main living area, with a hole in the roof where the smoke went out. It was fitted with a flap that could be closed to keep the rain and snow out. The Haida had another rather ingenious way of controlling smoke. Their roofs were made from closely fitted cedar planks. The gaps were sealed with moss. When it got too smoky inside, you took out the moss and let the smoke escape. What I find particularly fascinating about Haida culture is that it was matrilineal. Although chiefs were always men, power was passed down through the female line, and older women held a lot of societal influence. Sadly, this changed after contact with Western traders, who would only deal with men. Elsewhere, an alternative method of heating homes was developing. Instead of a big fire in the centre of an open plan, communal dwelling rooms were heated from below. As far back as 5000 BC, ancient Korea developed a system of underfloor central heating known as ondol, which literally means warm stone. The Romans had underfloor heating too. Theirs was called a hypocaust, from the Greek hypo meaning under, and causton, meaning burnt. Sounds like it might have been a bit hot on the soles of your feet. After the fall of the Roman Empire, this method of keeping homes warm was largely forgotten in the West. Everyone went back to just lighting a big fire in the middle of the room. Fires were certainly efficient at generating heat. They also spewed out smoke which was not so welcome, but people put up with it for centuries. Then from the late 16th century onwards, something changed. Starting in England, we switched from burning wood to coal. This is important because coal smoke is much more noxious than wood smoke, something I know from experience. Now while both wood and coal smoke will sort of like rise up and then hang in the atmosphere at the top of your room, and while they both cause respiratory problems, those caused by coal smoke are worse. And additionally, coal smoke contains sulphur and when that touches the wetness of your eyes, it makes sulfuric acid. No wonder that you find yourself weeping as well as coughing. As you can imagine, it was really unpleasant to have this smoke hanging around in the house. And this led to a major technological development, the chimney.