Everyone is feeling the increasing heat each year. For instance, the Hong Kong Observatory recorded an absolute maximum temperature of 36.1°C in 2023, which is 2.4°C higher than the absolute maximum temperature in 2003.
According to the latest assessment report from the Intergovernmental Panel on Climate Change (IPCC), the global surface temperature between 2011 and 2020 was 1.09°C higher than between 1850 and 1900. Human activities, mainly through greenhouse gases, have undoubtedly led to global warming.
Fossil fuels – coal, oil, and natural gas – are by far the main cause of global warming, accounting for over 75% of global greenhouse gas emissions and nearly 90% of all carbon dioxide emissions.
More Severe Storms
Nowadays, it's not just about recycling, but more about upcycling. Recycling generally means breaking down waste to create raw materials, while upcycling means converting waste into higher-value materials. Biodiesel is an excellent example of this, transforming waste oil into valuable material that can mitigate climate change, promoting sustainable development.
A circular economy is a sustainable economic model aiming to maximise resource efficiency, reduce waste, and minimize environmental impact. Biodiesel promotes a circular economy in several ways:
Unlike fossil fuels that require continuous extraction (which generates significant carbon footprints), biodiesel only needs plant-based materials or waste oil, thus reducing harm to the planet.
The gutter oil incident in 2012 and the toxic lard scandal in 2014 happened because collected waste cooking oil was not handed over to local biodiesel producers and was instead exported. This led to these oils being reprocessed and returned to the dining table, causing severe food safety issues. Redirecting waste oil to biodiesel plants can prevent such incidents
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