Connect with us

Published

on

Mark Maslin is professor of natural sciences at University College London (UCL) and Iain Hanson is honorary professor at the Bartlett School of Sustainable Construction, UCL.

Many of us feel guilt when we fly because it is a very obvious source carbon emissions. Aviation causes around 2.5% of global greenhouse gas emissions. But we do not perhaps feel the same guilt when we walk into a new building, even though global concrete manufacture emits closer to 8%. Or when we jump in a petrol car or turn on our gas central heating.

This is because aviation is a very visible symbol of our high-carbon consumption and, until now, the aviation industry has been slow to engage with the climate change agenda. According to the UN, we are looking at global warming of up to just over 3˚C which would be disastrous for the planet and our societies.

Human-caused global warming has just nudged passed 1.5˚C. But science suggests that we could keep close to this temperature increase if we reduced global emissions by 45% by 2030 and reached net zero by 2050.

Ambition and honesty: What Climate Home readers want in 2025

Post-COVID, aviation continues to regroup and grow and is set to be a trillion dollar industry by 2030, but it is incredibly vulnerable to the effects of climate change. Clear air turbulence events in the North Atlantic have increased by 55% since 1979, and prominent incidents have resulted in deaths, serious injury and damage to aircraft.

Extreme weather events are not just confined to there, with extreme rains and flooding affecting Middle Eastern airports and snowfall crippling UK airports causing considerable disruption.

While aviation is a relatively small contributor to global emissions, the industry is predicted to grow at 4% per year for the foreseeable future. Without meaningful action, net zero by 2050 will never be achieved. New generations of technology coming on-stream are not yet proven nor implementable, and aviation needs to reduce its carbon footprint now.

These five key steps focus on not only decarbonisation but make aviation more sustainable while also improving operational efficiency and safety.

1. Optimise flight planning and airspace

Airlines already try to select the most fuel-efficient routes and altitudes using advanced flight planning systems, AI, and optimisation software. However, future route optimisation could reduce turbulence events and the production of contrails with associated radiative forcing, increasing comfort and safety for passengers as well as contributing positively to the environment.

Optimising aircraft separation and air traffic control flow management can prevent aircraft bunching up and arrival delays because planes are forced into holding patterns, waiting their turn to land at the airport, carrying and burning large amounts of fuel.

2. Make operations more sustainable

The latest generation of commercial aircraft utilises advanced aerodynamics and engine technology, which saves a significant amount of fuel and emissions from previous types.

Airlines must invest in modern fuel-efficient aircraft as their expansion plans evolve. In the meantime, they can retrofit existing aircraft to improve efficiency by adding winglets to reduce induced drag and introducing new aircraft cabins, which save weight to improve efficiency.

Airlines and airports can also optimise weight and centre of gravity by reviewing the distribution of cargo and passengers to maximise efficiency, as well as using renewable energy to replace auxiliary power units on the ground and improving noise and air quality.

EU hit with lawsuit over green labelling of aviation and shipping investments

3. Switch to sustainable fuels

The biggest source of emissions within the aviation industry remains the burning of kerosene. Airlines need to transition from conventional to sustainable aviation fuels (SAF) over an agreed timescale with equitable access. SAFs cover a whole range of technology from biofuels derived from plants, animals or waste to synthetic fuels such as artificial kerosene.

Depending on which type of SAF is used, they could lower CO₂ emissions by 20–98% compared to conventional fuel. The quality, reliability and the supply of SAFs needs to be ensured and secured.

As first airline drops goal, are aviation’s 2030 targets achievable without carbon offsets?

4. Make airports more eco-friendly

Airports can become much more sustainable by using renewable energy, such as solar or wind energy, for airport operations, including powering the terminals and equipment. Renewable energy can be used for ground equipment and airplane support, by having electric airplane tugs, baggage loaders and catering trucks, for example.

It is possible to improve ground operations to reduce emissions such as minimising aircraft engine idling time during taxiing and using reduced engines for taxiing around the airport.

The industry has an exciting opportunity to design and develop the next generation of sustainable airports. There are 575 existing or new airport projects around the world at a total value of US$488 billion, (£395 billion) with many more planned over the next two decades.

5. Smart travel

The aviation industry can make passengers more sustainable by redefining the passenger experience from door to door, not just the time spent at the airport or on a plane. This could include luggage pickup from your home and incentives to use public transport to the airport.

Support to reduce luggage weight can be implemented by basic essentials (such as toiletries) or heavier equipment such as skis, ski helmets and golf clubs being provided at the end destination instead of everyone having to pack them.

This article is republished from The Conversation under a Creative Commons license. Read the original article.

The post Five ways to make aviation more sustainable right now appeared first on Climate Home News.

Five ways to make aviation more sustainable right now

Continue Reading

Climate Change

Equity, Benefit-Sharing and Financial Architecture in the International Seabed Area

Published

on

A new independent study by Dr Harvey Mpoto Bombaka (Centro Universitário de Brasília) and Dr Ben Tippet (King’s College London), commissioned by Greenpeace International, reveals that current International Seabed Authority revenue-sharing proposals would return virtually nothing to developing countries — despite the requirement under the UN Convention on the Law of the Sea (UNCLOS) that deep sea mining must benefit humankind as a whole.
Instead, the analysis shows that the overwhelming economic value would flow to a handful of private corporations, primarily headquartered in the Global North.

Download the report:

Equity, Benefit-Sharing and Financial Architecture in the International Seabed Area

Executive Summary: Equity, Benefit-Sharing and Financial Architecture in the International Seabed Area

https://www.greenpeace.org.au/greenpeace-reports/equity-benefit-sharing-and-financial-architecture-in-the-international-seabed-area/

Continue Reading

Climate Change

Pacific nations would be paid only thousands for deep sea mining, while mining companies set to make billions, new research reveals

Published

on

SYDNEY/FIJI, Thursday 26 February 2026 — New independent research commissioned by Greenpeace International has revealed that Pacific Island states would receive mere thousands of dollars in payment from deep sea mining per year, placing the region as one of the most affected but worst-off beneficiaries in the world.

The research by legal professor Dr Harvey Mpoto Bombaka and development economist Dr Ben Tippet reveals that mechanisms proposed by the International Seabed Authority (ISA) for sharing any future revenues from deep sea mining would leave developing nations with meagre, token payments. Pacific Island nations would receive only USD $46,000 per year in the short term, then USD $241,000 per year in the medium term, averaging out to barely USD $382,000 per year for 28 years – an entire annual income for a nation that is less than some individual CEOs’ salaries. Mining companies would rake in over USD $13.5 billion per year, taking up to 98% of the revenues.

The analysis shows that under a scenario where six deep sea mining sites begin operating in the early 2030s, the revenues that states would actually receive are extraordinarily small. This is in contrast to the clear mandate of the United Nations Convention on the Law of the Sea (UNCLOS), which requires mining to be carried out for the benefit of humankind as a whole.[1] The real beneficiaries, the research shows, would be, yet again, a handful of corporations in the Global North.

Head of Pacific at Greenpeace Australia Pacific Shiva Gounden, said:
“What the Pacific is being promised amounts to little more than scraps. The people of the Pacific would sacrifice the most and receive the least if deep sea mining goes ahead. We are being asked to trade in our spiritual and cultural connection to our oceans, and risk our livelihoods and food sources, for almost nothing in return.

“The deep sea mining industry has manipulated the Pacific and has lied to our people for too long, promising prosperity and jobs that simply do not exist. The wealthy CEOs and deep sea mining companies will pocket the cash while the people of the Pacific see no material benefits. The Pacific will not benefit from deep sea mining, and our sacrifice is too big to allow it to go ahead. The Pacific Ocean is not a commodity, and it is not for sale.”

Using proposals submitted by the ISA’s Finance Committee between 2022 and 2025, the returns to states barely register in national accounts. After administrative costs, institutional expenses, and compensation funds are deducted, little, if anything, remains to distribute [3].

Author Dr Harvey Mpoto Bombaka of the Centro Universitário de Brasília said:

“What’s described as global benefit-sharing based on equity and intergenerational justice increasingly looks like a framework for managing scarcity that would deliver almost no real benefits to anyone other than the deep sea mining industry. The structural limitations of the proposed mechanism would offer little more than symbolic returns to the rest of the world, particularly developing countries lacking technological and financial capacity.”

The ISA will meet in March for its first session of the year. Currently, 40 countries back a moratorium or precautionary pause on deep sea mining.

Gounden added: “The deep sea belongs to all humankind, and our people take great pride in being the custodians of our Pacific Ocean. Protecting this with everything we have is not only fair and responsible but what we see as our ancestral duty. The only equitable path is to leave the minerals where they are and stop deep sea mining before it starts. 

“The decision on the future of the ocean must be a process that centres the rights and voices of Pacific communities as the traditional custodians. Clearly, deep sea mining will not benefit the Pacific, and the only sensible way forward is a moratorium.”

—ENDS—

Notes

[1] A key condition for governments to permit deep sea mining to start in the international seabed is that it ‘be carried out for the benefit of mankind as a whole’, particularly developing nations, according to international law (Article 136-140, 148, 150, and 160(2)(g), the UN Convention on the Law of the Sea).

For more information or to arrange an interview, please contact Kimberley Bernard on +61407 581 404 or kbernard@greenpeace.org

Pacific nations would be paid only thousands for deep sea mining, while mining companies set to make billions, new research reveals

Continue Reading

Climate Change

North Carolina Regulators Nix $1.2 Billion Federal Proposal to Dredge Wilmington Harbor

Published

on

U.S. Army Corps of Engineers failed to explain how it would mitigate environmental harms, including PFAS contamination.

The U.S. Army Corps of Engineers can’t dredge 28 miles of the Wilmington Harbor as planned, after North Carolina environmental regulators determined the billion-dollar proposal would be inconsistent with the state’s coastal management policies.

North Carolina Regulators Nix $1.2 Billion Federal Proposal to Dredge Wilmington Harbor

Continue Reading

Trending

Copyright © 2022 BreakingClimateChange.com