Connect with us

Published

on

Researchers have retrieved human DNA from a Paleolithic pendant and discovered that it belonged to a Siberian woman who lived roughly 25,000 years ago.

This is the first time scientists have successfully isolated DNA from a prehistoric artifact using a newly developed extraction method, according to a study published Wednesday (May 3) in the journal Nature (opens in new tab) .

In 2019, archaeologists discovered the thumbnail-size pendant buried inside Denisova Cave in the Altai Mountains in southern Siberia. This cave is famous for once housing Neanderthals, the mysterious Denisovans and even modern humans, according to fossil and DNA evidence. The pendant is further evidence of the cave’s human occupation. Measuring roughly 0.79 inch (2 centimeters) long, the pierced deer tooth contained a single hole, which was likely drilled so that the wearer could hang it around their neck.

Because teeth are highly porous, they’re more likely to retain traces of DNA, such as from skin cells or sweat, compared with other materials, making them a good candidate for the team of international scientists to test the new method. To help “preserve the integrity” of the artifact while isolating the DNA, they designed the method to be nondestructive, according to a statement (opens in new tab) .

Related: Mysterious ‘painted people’ of Scotland are long gone, but their DNA lives on

This new technique involved using a soft spatula to carefully remove any leftover sediment from the cave before submerging the artifact into a buffer bath of sodium phosphate, which released the ancient DNA gradually beginning at the surface level and then deeper into the tooth. The researchers then increased the temperature of the liquid incrementally, beginning at room temperature, and swapping out the liquid multiple times until the human and deer DNA were released from the artifact, according to the study.

“The amount of human DNA [recovered] from using this method was mind blowing for me,” study author Elena Essel (opens in new tab) , a doctoral candidate at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, told Live Science in an interview. “I expected to only get a bit of human DNA, but we had more than enough to tell the human and animal DNA apart.”

Top view of the pierced deer tooth discovered in Denisova Cave in southern Siberia. (Image credit: Max Planck Institute for Evolutionary Anthropology)

While Essel said it would take further examinations to know specifically the source of the DNA — be it from sweat, blood or another biological form — the researchers were able to compare it with known human populations and determined that both the woman and the deer, a species of elk (Cervus canadensis) known as wapiti, lived sometime between 19,000 and 25,000 years ago and that the woman was of Siberian heritage.

“Time-wise it fits,” Essel said, “and geographically, the location of where the artifact was found fits.”RELATED STORIES—50,000-year-old DNA reveals the first-ever look at a Neanderthal family

—Prehistoric population once lived in Siberia, but mysteriously vanished, genetic study finds

—Beethoven’s DNA sheds light on the mystery of his death

Essel thinks this new method of DNA extraction could potentially be used on a variety of ancient artifacts, including tools, ornaments and other items once touched by humans.

“We think we can extract DNA from all types of artifacts using this method,” Essel said. However, it’s important that archaeologists wear proper equipment not just in the lab but during excavations, such as “gloves and masks to avoid cross contamination from their own DNA.”

Continue Reading

World

Israel announces military operation expanding in Gaza to seize ‘large areas’

Published

on

By

Israel announces military operation expanding in Gaza to seize 'large areas'

Israel is beginning a major expansion of its military operation in Gaza and will seize large areas of the territory, the country’s defence minister said.

Israel Katz said in a statement that there would be a large scale evacuation of the Palestinian population from fighting areas.

In a post on X, he wrote: “I call on the residents of Gaza to act now to remove Hamas and return all the hostages. This is the only way to end the war.”

He said the offensive was “expanding to crush and clean the area of terrorists and terrorist infrastructure and capture large areas that will be added to the security zones of the State of Israel”.

The expansion of Israel’s military operation in Gaza deepens its renewed offensive.

The ceasefire between Israel and Hamas that had begun in January ended in March as Israel launched various air strikes on targets across Gaza.

The deal had seen the release of dozens of hostages and hundreds of Palestinian prisoners, but collapsed before it could move to phase two, which would have involved the release of all hostages and the withdrawal of Israeli forces from Gaza.

Please use Chrome browser for a more accessible video player

26 March: Anti-Hamas chants heard at protest in Gaza

The Israel Defense Forces (IDF) had already issued evacuation warnings to Gazans living around the southern city of Rafah and towards the city of Khan Yunis, telling them to move to the al Mawasi area on the shore, which was previously designated a humanitarian zone.

Israeli forces have already set up a significant buffer zone within Gaza, having expanded an area around the edge of the territory that had existed before the war, as well as a large security area in the so-called Netzarim corridor through the middle of Gaza.

This latest conflict began when Hamas launched an attack on Israel on 7 October 2023, killing around 1,200 people and taking around 250 hostages.

The ensuing Israeli offensive has killed more than 50,000 Palestinians, according to Gaza’s Hamas-run health ministry.

Read more:
Father demands protection after Gaza aid workers’ deaths
Anti-Hamas chants heard at rare protest in Gaza

Please use Chrome browser for a more accessible video player

Bodies of aid workers found in Gaza

Aid group Doctors Without Borders warned on Wednesday that Israel’s month-long siege of Gaza means some critical medications are now short in supply and are running out, leaving Palestinians at risk of losing vital healthcare.

“The Israeli authorities’ have condemned the people of Gaza to unbearable suffering with their deadly siege,” said Myriam Laaroussi, the group’s emergency coordinator in Gaza.

“This deliberate infliction of harm on people is like a slow death; it must end immediately.”

Continue Reading

UK

Heathrow bosses ‘warned about substation’ days before major power outage, MP committee hears

Published

on

By

Heathrow bosses 'warned about substation' days before major power outage, MP committee hears

Heathrow Airport bosses had been warned of a potential substation failures less than a week before a major power outage closed the airport for a day, a committee of MPs has heard.

The chief executive of Heathrow Airline Operators’ Committee Nigel Wicking told MPs of the Transport Committee he raised issues about resilience on 15 March after cable and wiring took out lights on a runway.

A fire at an electricity substation in west London meant the power supply was disrupted to Europe’s largest airport for a day – causing travel chaos for around 200,000 passengers.

“I’d actually warned Heathrow of concerns that we had with regard to the substations and my concern was resilience”, Mr Wicking said.

“So the first occasion was to team Heathrow director on the 15th of the month of March. And then I also spoke to the chief operating officer and chief customer officer two days before regarding this concern.

“And it was following a number of, a couple of incidents of, unfortunately, theft, of wire and cable around some of the power supply that on one of those occasions, took out the lights on the runway for a period of time. That obviously made me concerned.”

Mr Wicking also said he believed Heathrow’s Terminal 5 could have been ready to receive repatriation flights by “late morning” on the day of the closure, and that “there was opportunity also to get flights out”.

However, Heathrow chief executive Thomas Woldbye said keeping the airport open during last month’s power outage would have been “disastrous”.

There was a risk of having “literally tens of thousands of people stranded in the airport, where we have nowhere to put them”, Mr Woldbye said.

This breaking news story is being updated and more details will be published shortly.

Please refresh the page for the fullest version.

You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow us on WhatsApp and subscribe to our YouTube channel to keep up with the latest news.

Continue Reading

Business

What are Donald Trump’s tariffs, what is ‘liberation day’ and how does it all affect the UK?

Published

on

By

What are Donald Trump's tariffs, what is 'liberation day' and how does it all affect the UK?

If there is a word that has dominated Donald Trump’s second term, it’s tariffs. 

Aluminium, steel, cars and champagne have all been in his firing line, while China, Canada and Mexico are the countries targeted with the heaviest costs.

Along the way, there have been threats, pauses and postponements.

So what are tariffs, what is in the pipeline – and what could all this mean for the UK?

What are tariffs and why is Trump threatening to use them?

Tariffs are taxes on goods imported into the US.

It is the importers buying the goods who pay the tariffs – therefore, American companies.

Ultimately, the intent is to protect US manufacturing and bolster jobs by making foreign-made products less attractive.

However, there is a knock-on effect: to compensate for tariffs, companies put up their prices, so customers end up paying more for goods.

Tariffs can also damage foreign countries as they make their products pricier and harder to sell.

In his second term, Mr Trump has frequently used them – or the threat of them – as a trade weapon.

Please use Chrome browser for a more accessible video player

Trump’s tariffs: What can we expect?

They are a key part of Mr Trump’s efforts to reshape global trade relations, and he plans to impose a swathe of what he calls “reciprocal” taxes that would match tariffs levied by other nations.

Tariffs were also part of his playbook in his first term, when he imposed taxes on most goods coming from China and used them as a bargaining chip to force Canada and Mexico to renegotiate a North American trade pact.

On his first day back in office, the US president promised 25% tariffs on all products coming into the US from its nearest neighbours Mexico and Canada – ostensibly to force the countries to tackle illegal migration and fentanyl crossing the border.

What is liberation day?

Mr Trump has branded 2 April “liberation day”, when he could unveil the reciprocal tariffs on countries deemed to be giving the US a bad deal on trade.

The extent of potential tariffs and countries affected remains unclear, with Mr Trump at times sending mixed messages.

On 30 March, he said “all countries” could expect to be hit by tariffs.

Please use Chrome browser for a more accessible video player

What is Trump’s ‘Liberation Day’?

Speaking from Air Force One, the US president rubbished a question from a reporter who asked whether it was true he was planning on targeting between 10 and 15 countries.

“Who told you 10-15 countries? You didn’t hear it from me,” he said.

When pressed on how many he was planning to hit, he said: “You’d start with all countries, let’s see what happens.”

Two days prior, he said he was open to carving out deals with countries seeking to avoid US tariffs, but that those agreements would be negotiated after 2 April.

He had previously said he “may give a lot of countries breaks, but it’s reciprocal”, adding: “We might be even nicer than that.”

How could the UK be affected?

The UK hopes an economic deal with the US will spare the country from some of the tariffs.

Sir Keir Starmer and Mr Trump have had “productive negotiations” towards a UK-US “economic prosperity deal”, Downing Street has said.

Please use Chrome browser for a more accessible video player

‘Everything on table over US tariffs’

The two leaders discussed a possible deal in a phone call on Sunday and agreed negotiations will “continue at pace”, according to a statement released on Sunday 30 March.

The day before the so-called “liberation day”, Sir Keir told Sky News political editor Beth Rigby the UK was “working hard on an economic deal” with the US and said “rapid progress” has been made.

But, he admitted: “Look, the likelihood is there will be tariffs. Nobody welcomes that, nobody wants a trade war.

“But I have to act in the national interest and that means all options have to remain on the table.”

Sir Keir added: “We are discussing economic deals. We’re well advanced.

“These would normally take months or years, and in a matter of weeks, we’ve got well advanced in those discussions, so I think that a calm approach, a collected approach, not a knee-jerk approach, is what’s needed in the best interests of our country.”

Mr Trump has not explicitly said the UK is in his sights for further tariffs, though he has described VAT – a tax added on all goods and services in the UK – as unfair.

In deciding what is a reciprocal tariff for the UK, it’s possible Mr Trump could use the tax, typically 20%, to decide.

Data shows no great trade imbalances – the gap between what you import and export from a certain country – and UK figures show no trade deficit with the United States.

UK ministers have previously suggested this could be good news for avoiding new levies.

But the tariffs Mr Trump has already announced would have a big impact on the UK – particularly the car tariff.

Please use Chrome browser for a more accessible video player

Business secretary hopes Trump tariffs will be ‘reversed in weeks or months’

Jonathan Reynolds, the business and trade secretary, told Sky News he is “hopeful” the tariffs can be reversed soon.

He warned: “The longer we don’t have a potential resolution, the more we will have to consider our own position in relation to [tariffs], precluding retaliatory tariffs.”

He added the government was taking a “calm-headed” approach in the hope a deal can be agreed, but said it is only “reasonable” that retaliatory tariffs are an option, echoing Sir Keir’s sentiments over the weekend.

What tariffs have already been announced?

Some tariffs have already come into effect, while Mr Trump has confirmed some that will come in on 2 April.

He has said a 25% tariff on all cars imported to the US will come into effect, with a similar tariff on car parts expected to follow in May.

This could prove even more complicated for American car makers, who source components from around the world even if the vehicle is made in the US.

Trump tariffs teaser for SEO liberation day explainer

But Mr Trump has insisted the move will “continue to spur growth”, pointing to plans from Hyundai – the South Korean car maker – to build a $5.8bn (£4.5bn) steel plant in Louisiana.

The tariff could have a huge impact on the UK’s car industry, including on manufacturers such as Jaguar Land Rover, Aston Martin and Rolls-Royce.

Official data shows the US is the UK car sector’s largest single market by country, accounting for £6.4bn worth of car exports in 2023 – 18.4% of the total.

Trump has also said he will place a 25% tariff on all imports from any country that buys oil or gas from Venezuela, which includes the US itself – in addition to imposing new tariffs on the South American country.

On 12 March, a 25% tariff on all steel and aluminium imports to the US came into effect, affecting UK products worth hundreds of millions of pounds.

The move came after he placed a 10% tax on all imports from China, which he later doubled to 20%.

He placed 25% tariffs on Mexico and Canada, but paused them for a month two days after they came into effect, meaning they are set to resume on 2 April.

The pause did not fully cover a tariff of 10% on Canadian energy products.

What has been the global response to tariffs?

There has widely been condemnation of the tariffs, especially from countries worst affected like Mexico and Canada.

Please use Chrome browser for a more accessible video player

Canadian PM: ‘Tariffs are an attack’

Some have imposed, or threatened to impose, retaliatory tariffs.

China has already hit back with retaliatory tariffs covering a range of US goods, including a 15% tariff on coal and liquefied natural gas products, a 10% tariff on US crude oil and tariffs of up to 15% on key US farm exports.

Canada imposed tariffs of its own on US products, including a 25% reciprocal tariff on US steel and aluminium products and tariffs worth an estimated C$29.8bn (£16bn) on a wide range of US products including orange juice, peanut butter, alcohol, coffee and clothing.

Read more on tariffs:
It may be harder for the UK to trump metals tariffs
Stock markets tumble as Trump tariffs loom

The European Union has said it will impose retaliatory tariffs on the US, but when they will come into force is unknown.

The European Commission initially threatened to impose “countermeasures” affecting €26bn (£21.9bn) of US goods from 1 April, but later delayed this until the middle of April.

The bloc said the delay was because it wanted “additional time for discussions” with the US after Mr Trump threatened a 200% tariff on EU alcohol – including wine and champagne – if the bloc imposed duties on US whiskey.

Any tariffs imposed by the bloc would not only impact US steel and aluminium products, but also textiles, home appliances, agricultural goods and whiskey.

Why tariffs could cost you – even if Trump spares UK

Even if no tariffs are put on all UK exports to the US, consumers globally will still be impacted by the wider trade war, particularly in the US.

Economists believe that tariffs will raise costs in the US, sparking a wave of inflation that will keep interest rates higher for longer. The US central bank, the Federal Reserve, is mandated to act to bring inflation down.

More expensive borrowing and costlier goods and services could bring about an economic downturn in the US and have knock-on effects in the UK.

Forecasts from the National Institute of Economic and Social Research (NIESR) predict lower UK economic growth due to higher global interest rates.

It estimated that UK GDP (a measure of everything produced in the economy) could be between 2.5% and 3% lower over five years and 0.7% lower this year.

The Centre for Inclusive Trade Policy thinktank said a 20% across-the-board tariff, impacting the UK, could lead to a £22bn reduction in the UK’s US exports, with the hardest-hit sectors including fishing and mining.

Continue Reading

Trending