London's Natural History Museum and Cambridge University have said that they are ready to co-operate with Zimbabwe to return human remains that were taken in the colonial era.
The fresh statements come after a delegation from Zimbabwe held talks with officials from both institutions.
The Zimbabweans are looking for the skulls of late-19th Century anti-colonial heroes, which they believe could be in the UK.
But these have not yet been found.
The authorities in Zimbabwe have long suspected that the remains of some of the leaders of an uprising against British rule in the 1890s - known as the First Chimurenga - were taken to the UK as trophies.
The most significant among them was a woman who became known as Mbuya Nehanda. She was executed in what is now the capital, Harare and is revered as a national heroine.
In doing a search of its archive, the Natural History Museum did uncover 11 remains "that appear to be originally from Zimbabwe" - but its records do not connect them with Nehanda. These include three skulls taken in 1893, thought to be from Zimbabwe's second city, Bulawayo, as well as remains uncovered in mineshafts and archaeological digs and later donated.
Cambridge University's Duckworth Laboratory has not been so specific, simply saying it has "a small number of human remains from Zimbabwe", but in a statement sent to the BBC it said it had not identified any of these as belonging to First Chimurenga figures.
The Natural History Museum, with 25,000 human remains, and the Duckworth Laboratory, with 18,000, have some of the largest such archives in the world.
These have come from a variety of sources including archaeological excavations of ancient sites, but for many the exact origins have been obscured by time.
During the colonial era, body parts were sometimes removed from battlefields or dug up from graves either as trophies or for research into a now-discredited scientific field.
In the 19th Century, phrenology, which investigated the idea that human characteristics could be determined by the shape of the skull, was very popular in the UK and other parts of Europe. Phrenological societies would collect skulls to help develop the theory, which for some extended to racial classification.
Some researchers set out to show that skull shape indicated that people from different parts of the world were inherently inferior.
Some of the archives that now exist in the UK are amalgamations of what had been amassed by defunct phrenological societies as well as private collectors.
Zimbabwe's government believes that somehow the skulls of the country's heroes ended up in the archives of a British museum.
Chief among them were spiritual leaders, including Charwe Nyakasikana, who became known as Mbuya (Grandmother) Nehanda as she was the medium of the revered ancestral spirit Nehanda. She was arrested after being accused of murdering a British official.
Nehanda was then hanged and her body decapitated, it is believed. What happened next is not clear, but in recent years, Zimbabwean officials have made several public statements saying it ended up in the Natural History Museum.
With a death cry of "my bones will surely rise", Nehanda became an increasingly potent symbol for those fighting against white-minority rule in what was then known as Rhodesia from the late 1960s.
Zimbabwe gained independence in 1980.
Statue of Mbuya Nehanda
A three-metre statue of Nehanda now stands over a major road in the centre of Harare. At its unveiling in 2021, President Emmerson Mnangagwa pledged to continue to call for the return of her skull and others from the Natural History Museum.
For Zimbabweans, the removal of the head "means that you have literally punished the person beyond the grave", Godfrey Mahachi, who led the delegation to the UK, told the BBC in 2020 when the visit was being planned.
"If the head is separated, that means that the spirit of that person will forever linger and never settle."
Despite not finding what the Zimbabwean delegation was looking for, both the Natural History Museum and Cambridge University say they are committed to working with the Zimbabwean government to repatriate what was found.
As part of its policy of repatriation, earlier this year, the Natural History Museum returned ancestral Moriori and Maori remains.
In a press statement following a recent cabinet meeting, Zimbabwe's government said that the delegation that went to the UK was satisfied that "there are indeed human remains of Zimbabwean origin in the UK".
"Government will spare no effort to ensure the repatriation of our ancestors," it added.
The Zimbabwean delegation also held talks with the British Museum, Oxford University's Pitt Rivers Museum, the University of Manchester Museum and the UK's National Archives. But no details are given about what was discussed.
Despite the lack of success in this trip to the UK, the historical significance to Zimbabwe of the remains of Nehanda and others means that the search will continue.
A pair of 2000 year-old children's shoes found in ruins of Roman city of Palmyra, Syria.
Palmyra; founded near a fertile natural oasis, it was established in 3rd millennium BC, as settlement of Tadmor, and became a leading city of Near East and major trading post on Silk Road.
Mysterious mummy found in tomb in Peru with hands covering its face .
In 2021 , A mummy, fully bound in ropes and with its hands covering its face, has been discovered in an underground tomb in Peru.
Archaeologists from the National University of San Marcos found the mummy in good condition in Cajamarquilla, a significant site 15.5 miles inland from the coastal city and capital Lima, Peru.
The mummy is estimated to be between 800 and 1200 years old.
Although the mummy’s striking pose – bound by ropes and in the foetal position – appears chilling at first sight, researchers believe it is a southern Peruvian funeral custom.
The tomb also contained ceramics, vegetable remains and stone tools.
The Veluwemeer Aqueduct in the Netherlands is a stunning work of architecture and engineering.
This waterway measures up at a short 25m long by 19m wide and is located in Harderwijk, Eastern Netherlands.
During the design of this unique passage engineers chose to construct the waterway over the N302 Road, where 28,000 vehicles pass each day.
The design implemented in this aqueduct allows for constant traffic flow on both the water & road.
How cool is this!!
A true architectural and engineering masterpiece
culled from Burchills Engineering Solution
Novak Djokovic was not allowed to defend his Australian Open title this year
The Australian Open cannot press its country's government into allowing Novak Djokovic to play in January's opening Grand Slam event of 2023, says tournament director Craig Tiley.
Nine-time winner Djokovic, who is unvaccinated against Covid-19, is banned from re-entering Australia until 2025 after he was deported this year.
The Australian government can waive the ban at its discretion.
"It's not a matter we can lobby on," said Tiley.
"Novak and the federal government need to work out the situation and then we'll follow any instruction after that.
"It's a matter that definitely stays between the two of them and then depending on the outcome of that we would welcome him to the Australian Open."
Former world number one Djokovic, a 21-time Grand Slam champion, also missed this year's US Open because of his vaccination status, following his victory at Wimbledon in the summer.
Australia's former Home Affairs Minister Karen Andrews said this week she was opposed to the government lifting Djokovic's ban, saying it would be a "slap in the face" for Australians who have been vaccinated.
Meanwhile, Russian and Belarusian players will be allowed to compete in Melbourne, although Russian players will not be allowed to represent their country.
"They cannot participate in any activity such as the anthem of Russia and they have to play as independent players under a neutral name," said Tiley.
Following Russia's invasion of Ukraine, Russian and Belarusian players are banned from international team competitions.
But despite Wimbledon's ban they were permitted to compete as neutral athletes at both this year's French Open and US Open.
The United Nations General Assembly has voted overwhelmingly to condemn Russia's attempts to annex four regions of Ukraine.
The resolution was supported by 143 countries, while 35 states - including China and India - abstained.
As well as Russia, four countries rejected the vote, namely Belarus, North Korea, Syria and Nicaragua.
Although symbolic, it was the highest number of votes against Russia since the invasion.
Last week, in a grand ceremony in the Kremlin, President Vladimir Putin signed documents to make the eastern Ukrainian regions of Luhansk, Donetsk, Zaporizhzhia and Kherson part of Russia.
The agreements were signed with the Moscow-installed leaders of the four regions, and came after self-proclaimed referendums in the areas that were denounced as a "sham" by the West.
Soldiers go door-to-door for votes in 'referendums'
The resolution calls on the international community not to recognise any of Russia's annexation claims and demands its "immediate reversal". It welcomes and "expresses its strong support" for efforts to de-escalate the conflict through negotiation.
The countries which voted with Russia all have a longstanding stance of criticising Western governments.
Belarus is considered a satellite state of its neighbour and ally, and its territory was used in Moscow's invasion of Ukraine in February.
As well as China and India, which have attempted to remain neutral on the conflict, parties that abstained from the vote included 19 nations in Africa.
Many African countries have avoided taking sides in the war - which has been seen as a reflection of efforts to maintain longstanding trade ties, or of historic non-alignment policies.
Ukraine's President Volodymyr Zelensky said he was grateful to the countries that did support the resolution.
"The world had its say - [Russia's] attempts at annexation is [sic] worthless and will never be recognised by free nations," he tweeted, adding that Ukraine would "return all its lands".
US President Joe Biden said the vote sent a "clear message" to Moscow.
"The stakes of this conflict are clear to all, and the world has sent a clear message in response - Russia cannot erase a sovereign state from the map," he said.
Dame Barbara Woodward, Britain's ambassador to the UN, said Russia had failed on the battlefield and at the UN, adding that countries had united to defend the world body's charter.
"Russia has isolated itself, but Russia alone can stop the suffering. The time to end the war is now," she said.
The General Assembly vote was triggered after Russia used its veto power to prevent action at the Security Council - the body in charge of maintaining international peace and security. As permanent members, China, the United States, France and the United Kingdom also hold vetoes on the council.
There have been calls for Russia to be stripped of its veto power after the Ukraine invasion.