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The Science of Climate Change

Climate change is no longer a distant threat or just a possibility, it is now a reality for all of us. In this pathway, Kevin Trenberth, a renowned climatologist, delves into the science behind climate change. He first introduces the climate system, its main components and forces.

Tackling the Plastic Crisis

Plastic pollution is by far the biggest threat to our oceans and this remains an incredibly tough problem to solve. Plastic credits could potentially serve as one of the much needed solutions for this crisis.

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The Scale of the Net Zero Challenge

The price of meeting net zero is estimated to be between $100-150 trillion over the next 30 years. Regardless of this cost, we need to reach net zero before climate change does irreversible damage to the environment and the economy.

ESG, Sustainability and Impact Jargon Buster

ESG, sustainability, impact… they all just mean green, right? Not quite. Despite being used often interchangeably, there are distinct differences between these terms.

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Featured Pathways

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The Science of Climate Change

Climate change is no longer a distant threat or just a possibility, it is now a reality for all of us. In this pathway, Kevin Trenberth, a renowned climatologist, delves into the science behind climate change. He first introduces the climate system, its main components and forces.

Tackling the Plastic Crisis

Plastic pollution is by far the biggest threat to our oceans and this remains an incredibly tough problem to solve. Plastic credits could potentially serve as one of the much needed solutions for this crisis.

More pathways

Book a demo

Ready to get started?

Our Platform

Expert led content

+1,000 expert presented, on-demand video modules

Learning analytics

Keep track of learning progress with our comprehensive data

Interactive learning

Engage with our video hotspots and knowledge check-ins

Testing & certification

Gain CPD / CPE credits and professional certification

Managed learning

Build, scale and manage your organisation’s learning

Integrations

Connect Sustainability Unlocked to your current platform

Featured Content

More featured content

The Scale of the Net Zero Challenge

The price of meeting net zero is estimated to be between $100-150 trillion over the next 30 years. Regardless of this cost, we need to reach net zero before climate change does irreversible damage to the environment and the economy.

ESG, Sustainability and Impact Jargon Buster

ESG, sustainability, impact… they all just mean green, right? Not quite. Despite being used often interchangeably, there are distinct differences between these terms.

More featured content

Book a demo

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5 Ways We Can Reduce Our Carbon Footprint

5 Ways We Can Reduce Our Carbon Footprint

Kevin Trenberth

Former Coordinating Lead Author of the IPCC

The climate crisis will require a global effort unlike anything we've ever seen. But how can we help on a smaller scale? Join Kevin Trenberth as he outlines a few ways individuals can revise their lifestyles to join the fight against climate change.

The climate crisis will require a global effort unlike anything we've ever seen. But how can we help on a smaller scale? Join Kevin Trenberth as he outlines a few ways individuals can revise their lifestyles to join the fight against climate change.

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5 Ways We Can Reduce Our Carbon Footprint

11 mins 38 secs

Key learning objectives:

  • Understand how our lifestyles impact the climate

  • Outline changes we can make to live more sustainably

Overview:

Transitioning to a more sustainable lifestyle is all about making small, impactful changes. There are a few areas we can make the most impact including: using more efficient materials, switching to greener appliances, being mindful of how we heat and cool our households and utilising better methods of transportation.

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Summary

How can we reduce the impact in efficiency?

The greatest gain in reducing energy use is through greater efficiency - cutting waste. Cutting leaks and improving insulation are most important. Insulating the attic should be your first step as approximately 25% of heat is lost through the roof. Increased efficiency applies also to electricity and appliances - replacing an old refrigerator pays for itself very quickly by reduced running costs. There is also a need for improved building codes to ensure more energy efficient houses and structures. 

How can we reduce the impact in our households?

1. When you’re not in the room or using a device, turn it off. In the UK, 9-16% of electricity consumed in your home is used on devices in standby mode.

2. Switch to energy saving light bulbs. In old bulbs, only 10% of the energy used was for light and the rest was wasted on heat - which isn’t particularly helpful. LED bulbs, however, use 95% of their energy on light and they last longer - a win-win situation. 

3. Don't put washed items in the dryer and utilise the clothes line - for free. 

4. Be sure to recycle, recycle and recycle more. According to Stanford University, the more we recycle, the less will end up either incinerated or in landfills. Therefore, we’re saving energy, conserving resources and reducing air pollution, water pollution and greenhouse gases.

5. Consider installing solar panels on the roof of your home - especially if there is net metering in which excess energy generated goes into the grid, and power can be purchased at the same rate. 

How can we reduce the impact of heating?

It’s vital to neither overheat nor overcool. In the summer, set your thermostat to approximately 24 degrees Celsius/76 degrees Fahrenheit. Likewise, set it to 19 degrees Celsius/66 degrees Fahrenheit in the winter. 

Another fantastic energy saving tool is the heat pump. According to the IEA: “Heat pumps could satisfy 90% of global heating needs with a lower carbon footprint than gas-fired condensing boilers”. These pumps capture heat from an outside source and move it into your home. The only electricity used is that needed to move the heat from outside to inside, which is dwarfed by the heat delivered. And they work in reverse in summer, for cooling the interior.

Consider evaporative coolers. These cool the air in the home by using excess heat to evaporate water. 

How can we reduce the impact of transport?

Transportation accounts for a whopping 25% of global CO2 emissions, mainly from car driving. 

For short distances, cycling is becoming more popular worldwide. According to the Environmental and Energy Study Institute, in the European Union, cycling “prevents upwards of 16 million tons of carbon dioxide emissions per year”. It is then a great form of exercise that can reduce your chances of developing heart disease or cancer. 

For longer distances, choose public transportation over driving. The more people using the same public transport, the smaller the carbon emissions. It’s hard to completely cut out long-distance transport but it is much easier to limit the unnecessary short journeys. 

How can we make a difference politically?

The most profound impact you can make is to be politically engaged. This means voting for candidates who prioritise the environment. For example, if you would like to cycle but live in an area built for 4x4s, message your local authorities and campaign for better biking infrastructure.

Climate friendly policies are hugely popular. There is strength in numbers and politicians will pay attention if they know we’re paying attention. These messages must be carried forward as part of national and international policy with appropriate incentives. 

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Kevin Trenberth

Kevin Trenberth

Dr. Kevin Trenberth is a Distinguished Scholar at the National Center for Atmospheric Research (NCAR). He was a Coordinating Lead Author of the 1995, 2001, and 2007 Scientific Assessment Reports of the Intergovernmental Panel on Climate Change (IPCC). Kevin also shared the 2007 Nobel Peace Prize which went to the IPCC and Al Gore. Between 1999 to 2006, Kevin served on the Joint Scientific committee of the World Climate Research Programme (WCRP). Kevin then went on to chair the WCRP Observation and Assimilation Panel from 2004 to 2010 and the Global Energy and Water Exchanges (GEWEX) Scientific Steering Group from 2010 to 2013. He has also served on many US national committees and is a Fellow of the American Meteorological Society (AMS), the American Association for the Advancement of Science (AAAS), the American Geophysical Union (AGU), and an honorary fellow of the Royal Society of New Zealand Te Apārangi. Kevin has received many awards throughout his career. In 2000, he received the Jule G. Charney award from the AMS; in 2003, he was given the NCAR Distinguished Achievement Award. In 2013 he was awarded the Prince Sultan Bin Abdulaziz International Prize for Water, and he received the Climate Communication Prize from AGU and in 2017 he was honoured with the Roger Revelle medal by the AGU.

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