Potatoes and Heat

Jacket potatoes taste better when they're roasted in the oven than in the microwave because the heat slowly roasts them from the outside. The microwave causes the potatoes to heat up from inside out. In winter I don't care too much about the oven being used because the heat is used twice, it cooks the food and helps to heat up the home. The thing I was wondering was. 

How long does the heat stay there? The heat energy is transmitted from molecule to molecule but it doesn't move in a straight line, some of the heat energy would zig zag and even travel back into the oven from the edge of the room. The way I look at it is energy released in the core of the sun slowly moves from the core to the sun's surface, the journey can take millions of years because the photons don't go in the straight line, they bounce from molecule to molecule in a tangled random route, when the photon finally gets to the sun's surface, it takes just 8 Minutes to move across space to our planet. I thought similar things would happen with an oven, some of the heat released travels around the room for 2 or 3 years before finally leaving the room; most of the heat would escape in less than 2 hours but a tiny.portion of the heat energy would remain there, perhaps 0.00001 % would still be there a year later. 

Environment perspective

There are four Alan's so far New Alan, 90's Alan, Millennium Alan and Servant Alan.I am presently Servant Alan because I realized my reason to live in this world is to be a Servant, to assist the world in different ways. From spring 2019 till now I am Servant Alan. A man that has no desire for prestige but only asked what can I do for my family and the world? Or what can I learn today? Servant Alan listens more than he speaks. 

 Millenium Alan thought that Global warming is not a big Hazard because it has taken a century for the atmosphere to increase by 1°C. He believed that fossil fuels would run out or become too expensive before climate change became a big Hazard. 

Servant Alan is different, he asked what does that mean. Chain reactions can happen, frozen methane at the bottom of the ocean could evaporate and bubble to the surface, ice floating in the sea could melt and reflect less heat back into space causing a chain reaction. I now realize that a Global Famine is definitely going to happen and would likely wipe out at least one third of all people on Earth. The ocean water will become acidic and bitter. We have all seen what a 1°C increase in heat can do, we watched record temperatures, wildernesses burning up and draught. We saw lots of super hurricanes like 'Catrina'. Much of our Earth was either flooded or dry. Perhaps by 2050 it will be 2°c.

Now I ask what can I do? I don't know.