There are a few things in our personal lives that really contribute heavily to our carbon footprint, and commuting is one of those things. So how we commute, do we drive? Do we carpool? Do we take the bus? Do we walk, bike, etcetera? And if we bike, do we, you know, do micro mobility, or do we own our own bike, e bikes, etcetera?
Our food and consumption is actually huge. And maybe I'll give you some stats to paint that picture. So, steel, everyone, like, knows that steel is a highly industrial process. Right? Very high carbon footprint. When it comes to global emissions, steel makes up about 10% of global emissions. Cement manufacturing is also up there. Most people don't know that manufacturing cement actually is very energy, intense and releases a lot of greenhouse gases and is up there around 10% as well. And globally, food and agriculture combined are 25% of global emissions. Right? So we always think of, like, oh, these industrial, like, industries, they're so high. Commercial flying is somewhere between one and a half percent to 2%. The maritime industry is somewhere around there as well.
So just to give you a sense of how big food really is in our lives and how important it is because it's actually something that we have control over. When it comes to things like commuting or energy at our home, we can't really control a lot of the energy sources or if there's a bus stop outside or if there's snowing or raining, etcetera. But food is something that we do three times a day. We eat three meals at least, and we have a lot of control over. So food is a big one.
Flying is definitely impactful. That's why, for example, in countries like Canada and The US, you know, developed nations like Australia and many others actually have a lot, a higher carbon footprint because people have disposable income. So they have a higher ability to travel, to fly, and various things. So flying definitely has a high carbon footprint.
And then energy at your home. So whether, you are, you know, in the summer, is your home at, you know, 70 degree 70 degrees Fahrenheit, or is it at 75 or 76? Right? Those types of things make a difference. Same thing in the winter. Right? Is your home at 70, or is it at 68? So what are some of the smaller changes that we can make from that perspective? And even things like, when we're drying our clothes. Right? Are we using the, electric dryer, or are we air drying? Because, obviously, tumble drying requires a lot of energy. So from that perspective, you know, small changes can make a difference.
And then there's also the source of energy. A lot of people it's probably more difficult for them to make changes there because it's gonna require you to do a lot of calling and and various things. And you may live in a city where you're lucky that there is an abundance of clean energy, and they're able to reach out to you directly. But for most people, it's still a little bit difficult to tell, like, you know, you've got a local utility and kind of what you see is what you get. You don't really get a choice.
So just to sum it up again, it's really the commuting, your food, how much you fly, energy at your home, and obviously things like consumption, what we're buying, how we're buying, how how frequent we're buying. Those all make a difference as well. I will say, there's a lot of different trends that are coming up to make consumption more responsible. One I'd like to highlight is, for example, shopping vintage or buying reused things or buying at marketplaces like, you know, Kijiji or Facebook marketplace where you can actually buy used items.
And then just thinking about the amount of waste that we're generating when we are buying things, whether it's groceries. There are shops coming up that are zero waste. So, for example, you can go buy rice and bring your own container, And you buy you pay by the pound. And there are shops where you can buy rice, flour, tapioca flour, panko, like all of it you can buy in bulk and you can even go and bring a bottle, refill it with olive oil, with, like, maple syrup, avocado oil, like, all those different things to reduce the amount of packaging.
And I'm actually using a skincare line now that is paper based. So instead of a plastic container, it is paper. So the so it's more solid. It's kinda more like a bar, but they've got serums. They've got face creams, night creams, all of those different things. So as you go on this journey, you're constantly discovering and learning, which is partly what makes it really fun.