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The fat from dead pigs and cows is increasingly being used to power planes and cars as a greener alternative, which could end up being even worse for the environment than traditional jet fuel, new research has warned.

The use of animal fat in biodiesel has increased by forty times since 2006, and demand is set to triple by 2030 compared to 2021, according to the study by green campaigners Transport and Environment (T&E).

But there is not enough waste animal fat to scale it up sustainably.

All the animal fat that already exists – usually coming from unwanted animal body parts in abattoirs – is already used in things like candles, cosmetics and pet food.

A transatlantic flight between Paris and New York would need the fat from 8,800 dead pigs each way, according to T&E calculations.

However, animal fats are just one component of sustainable fuel, along with things like vegetable fats and waste crops – and sustainable fuel is still dwarfed by kerosene.

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Tom Heap looks at what the aviation industry is doing to become more climate-friendly

But the figure “illustrates the size of the problem,” Matt Finch from T&E told Sky News. “There are hundreds of transatlantic flights every day. Animal fats will be sucked into aviation, that’s an absolute given.

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“But dead animals don’t grow on trees, so if aviation suddenly wants to use a lot of animal fats in its fuels, it can’t be used by other sectors.”

Those sectors would likely turn to palm oil instead, which is cheap and has similar properties.

But all the palm oil produced is already used too, so increased demand would likely require slashing more tropical rainforest to create more plantations.

“This is the worst environmental outcome possible,” said Mr Finch.

If virgin palm oil were to substitute animal fats, CO2 emissions of animal fats biofuels could be up to 1.7 times worse than conventional diesel, the research says.

The shift in uses can “therefore significantly undermine the climate benefits of using animal fats biofuels”, it warns.

The EU is bringing in a sustainable aviation fuel mandate that would allow potentially unlimited amount of animal fats in sustainable fuels.

The UK is still consulting on plans, but is likely to cap animal fats at a maximum of 2%, or ban them altogether.

That’s “good news,” for the impact on palm oil, said Mr Finch. But he beleives the UK mandate risks relying too much on waste products, which are always only ever available in limited volumes.

According to Mr Finch, the most environmentally friendly alternative, is to replace jet fuel with a blend of “green” hydrogen – made from clean electricity – with carbon captured at source from things like factories. But this is expensive and supply is limited at the moment.

A spokesperson from Sustainable Aviation, the UK aviation industry sustainability coalition, called sustainable aviation fuels (SAF) a “here and now solution to decarbonising UK flights.

“They are made from a wide variety of feedstocks that must meet strict sustainability criteria, do not compete with food production and are rigorously certified.

“Future UK SAF production will be largely based on feedstocks like black-bag waste or waste gases.

“The UK has enough feedstock for SAF use to help aviation achieve net zero by 2050, alongside synthetic SAFs made from captured carbon and green hydrogen that we expect to see next decade.”

Watch The Climate Show with Tom Heap on Saturday and Sunday at 3pm and 7.30pm on Sky News, on the Sky News website and app, and on YouTube and Twitter.

The show investigates how global warming is changing our landscape and highlights solutions to the crisis.

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Jaguar Land Rover to ‘pause’ US shipments over Donald Trump tariffs

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Jaguar Land Rover to 'pause' US shipments over Donald Trump tariffs

Jaguar Land Rover (JLR) has said it will “pause” shipments to the US as the British car firm works to “address the new trading terms” of Donald Trump’s tariffs.

The US president has introduced a 25% levy on all foreign cars imported into the country, which came into force on Thursday.

JLR, one of the country’s biggest carmakers, exported about 38,000 cars to the US in the third quarter of 2024 – almost equal to the amount sold to the UK and the EU combined.

Follow live updates: Trump’s baseline 10% tariff kicks in

In a statement on Saturday, a spokesperson for the company behind the Jaguar, Land Rover and Range Rover brands said: “The USA is an important market for JLR’s luxury brands.

“As we work to address the new trading terms with our business partners, we are taking some short-term actions including a shipment pause in April, as we develop our mid- to longer-term plans.”

The company released a statement last week before Mr Trump announced a “baseline” 10% tariff on goods from around the world, which kicked in on Saturday morning, on what he called “liberation day”.

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JLR reassured customers its business was “resilient” and “accustomed to changing market conditions”.

“Our priorities now are delivering for our clients around the world and addressing these new US trading terms,” the firm said.

Trading across the world has been hit by Mr Trump’s tariff announcement at the White House on Wednesday.

All but one stock on the FTSE 100 fell on Friday – with Rolls-Royce, banks and miners among those to suffer the sharpest losses.

Read more: A red wall on Wall Street – but Trump seems to believe it will work out

Cars are the top product exported from the UK to the US, with exports worth £8.3bn in the year to the end of September 2024, according to data from the Office for National Statistics.

For UK carmakers, the US is the second largest export market behind the European Union.

Industry groups have previously warned the tariffs will force firms to rethink where they trade, while a report by thinktank the Institute for Public Policy Research said more than 25,000 car manufacturing jobs in the UK could be at risk.

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Two people die after caravan fire at holiday park in Lincolnshire

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Two people die after caravan fire at holiday park in Lincolnshire

Two people have died following a fire at a caravan site near Skegness, Lincolnshire Police have said.

In a statement, officers said they were called at 3.53am on Saturday to a report of a blaze at Golden Beach Holiday Park in the village of Ingoldmells.

Fire and rescue crews attended the scene, and two people were found to have died.

They were reported to be a 10-year-old girl and a 48-year-old man.

The force said the victims’ next of kin have been informed and will be supported by specially trained officers.

Officers are trying to establish the exact cause of the blaze.

“We are at the very early stages of our investigation and as such we are keeping an open mind,” the force said.

Two fire crews remain at the scene.

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Boy dies after ‘getting into difficulty’ in lake in southeast London

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Boy dies after 'getting into difficulty' in lake in southeast London

A 15-year-old boy has died after “getting into difficulty” in a lake in southeast London, police say.

Officers and paramedics were called shortly after 3pm on Friday to Beckenham Place Park in Lewisham.

The Metropolitan Police said a boy “was recovered from the lake” at around 10.42pm the same day.

“He was taken to hospital where he was sadly pronounced dead. His death is being treated as unexpected but not believed to be suspicious,” according to the force.

The boy’s family has been told and are being supported by specialist officers.

The force originally said the child was 16 years old, but has since confirmed his age as 15.

In the earlier statement, officers said emergency services carried out a search and the park was evacuated.

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google street view inside Beckenham Place park, Lewisham where a 16 y/o boy is missing after getting into difficulty in a lake
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Emergency teams were called to Beckenham Place Park on Friday afternoon

Beckenham Place Park, which borders the London borough of Bromley, covers around 240 acres, according to the park’s website.

The lake is described as 285 metres long, reaching depths of up to 3.5 metres.

It is designed as a swimming lake for open-water swimming and paddle boarding.

A London Ambulance Service spokesperson said on Friday: “We were called at 3.02pm this afternoon to reports of a person in the water.

“We sent resources to the scene, including an ambulance crew, an incident response officer and members of our hazardous area response team.”

Emergency teams have not explained how the boy entered the water, or whether he was accompanied by others.

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