What is climate change?
Climate change is a change in the average weather conditions, like rainfall and temperature, in a region over a long period of time. In comparison, weather is what you see outside your window right now.
The climate is controlled by gases in the atmosphere which help to trap the sun’s heat to keep us warm, these are called greenhouse gases. Without these gases, the Earth’s average temperature would be around -18°C instead of the current 15 °C.
Climate change can happen through natural processes, but we now know that humans have caused the most recent changes. Burning oil, gas and coal in our homes, factories, and transport. These are known as fossil fuels, as they were made from the remains of plants and animals thousands of years ago, and they will eventually run out. When fossil fuels burn, they release gases, mainly carbon dioxide (CO2) which is a greenhouse gas. The more greenhouses gases in the atmosphere, the more heat is trapped and the warmer the planet gets. The Earth’s average temperature has risen by 1.2 degrees Celsius since 1750.
What are the impacts of climate change?
The increased warming of the Earth’s atmosphere by greenhouse gases is causing sea levels to rise, oceans to warm up and rainfall patterns to change. Around the world, and even in the UK, seasons are changing too, meaning that flowers are blooming earlier than before.
Ultimately, the effects will be different depending on where you live in the world. What we do know however, is that weather events will be more difficult to predict.
How does climate change link to waste?
Fossil fuels are the main cause of climate change, unfortunately, we use them for almost everything we do. As shown in the diagram when we make ‘stuff’ we use up the earth’s materials such as oil, wood, water, and metal. These materials are then converted into everyday items such as plastic bottles, clothes, tables, and toys by using energy made from fossil fuels in the production and manufacturing process. Even more greenhouse gases are produced in the distribution of ‘stuff’ in transport such as trains, plains, lorries, and cars.
Once we are done using our ‘stuff’, we either repair it, donate it, repurpose it, recycle it or throw it away. When we through away our ‘stuff’ we create even more greenhouse gasses.
If we recycled everything (like nature does, in a circular way – see our page on the Circular Economy) then we would need less energy to make new stuff. So climate change is closely linked with resource use. The more stuff we use and make, the more dangerous and damaging greenhouse gases are emitted.
For example, when natural materials (food waste, card, paper, or fabrics like cotton or wool) end up in a low-oxygen environment, like a landfill site, it decomposes to produce another greenhouse gas called methane (CH4).
Methane is a much bigger contributor to global warming than CO2 and climate change as it is really good at insulating the Earth. In many cases, methane from large landfill sites is captured to produce electricity.
How does waste in Devon impact climate change?
In Devon we’re lucky as our rubbish won’t end up in landfill, it goes to make energy in our EfW plants in Exeter and Plymouth, which means less methane is produced. In comparison, many other places around the UK black bin bag rubbish is still sent to landfill.
Additionally, Devon has an impressive recycling rate compared to the rest of the UK, with the average households across the Devon County area at 56%, Torbay at 41% and Plymouth City Council at 35%.
However, 9% of greenhouse gas emissions in Devon still come from waste disposal activity and total household waste collected in Devon in 2018/19 was 519 kt. In addition, 41% of what ends up in household black bins in Devon is recyclable. We therefore need to continue to increase how much we recycle.
What can we do?
Reduce – We all need to create waste in the first place. Think before you buy! Challenge yourself, your friends or your family to see how long you can go without anything something new! (except for food and hygiene products of course)
Reuse – There are many ways to reuse items to get more use out of them. Why not use old shoes with holes in as bird nest boxes or turn scrap paper into pads to make shopping lists. What reuse ideas can you come up with?
Recycle – Our kerbside recycling is really good at collecting and recycling materials so they can be turned into new stuff. Check you know the details of your local collection. Wash out plastic tubs and glass bottles so they can be recycled easily.
Food Waste, Methane & Landfill
A sixth of all food in the UK is wasted somewhere along the process. This could be “wonky” vegetables not meeting supermarket standards, or those last chips on your plate that you couldn’t finish. A lot of this then goes in the bin in the UK.
What can we do?
Reduce – We all need to not make food waste in the first place. Eat seasonally and buy food with the least packaging (and lowest food miles) possible; only buy what we need and don’t fall for supermarket tricks to make us buy more. Have a look at these dads who took on the challenge to reduce their families food waste.
Reuse – Eat up your leftovers! We have a lovely book of recipes for leftovers available here.
Recycle – If you can’t reduce or reuse your food waste then make sure it gets recycled. Most councils in Devon have a food waste collection. You can find out what happens to food when it gets recycled in our video here.
Every year more and more plastic is made, 95% of this is made from crude oil. This drives a cycle of needing more and more oil, leading to more being used for fuel and so being burnt in vehicles. Plastic is also transported around the world to make more and more stuff. Much plastic ends up in landfill, where it will stay for ever, but some is burnt, releasing carbon dioxide into the air.
What can we do?
Reduce – The best thing we can do is to use or buy less plastic in the first place. Don’t buy anything “just because”. Ask yourself if you really need another plastic item, or if you do need it then find an alternative, made from a renewable resource like wood.
Reuse – Reusing plastic items stops them ending up in our bins. Fill up that reusable water bottle before you leave the house or take a cloth bag with you to the supermarket.
Recycle – If you can’t reduce or reuse it then make sure it gets recycled. Most hard plastics like tubs, bottles and trays can be recycled in your kerbside collection, while Tesco has bins for filmy plastics, or there may a Terracycle collection point near you.