"People have thought for quite a long time that we've worked out all the ways that life can reproduce or replicate, but this is something that's never been observed before," Douglas Blackiston, co-author and a senior scientist at Tufts University and Harvard University, said in a news release.
The xenobots were first developed and reported in 2020. They are made from about 3,000 embryonic skin cells of an African clawed frog.
The researchers discovered that these xenobots -- when designed properly -- can swim around while collecting hundreds of single cells to assemble smaller versions of themselves in their mouths. These smaller xenobots can grow to be full-size within a few days.
This method of reproduction is known as kinematic replication and is common in molecules, but has never been seen in cells or organisms.
"This is profound," Michael Levin, a co-leader of the study and a professor of biology and director of the Allen Discovery Center at Tufts University. "These cells have the genome of a frog, but, freed from becoming tadpoles, they use their collective intelligence, a plasticity, to do something astounding."
To discover the xenobots’ reproduction capabilities, the researchers used a supercomputer at the University of Vermont to simulate billions of body shapes to determine what would be ideal for kinematic replication.
Months later, the computer returned a xenobot in a shape that resembled a Pac-Man figure, with a large mouth that can be used to build other xenobots.
“It looks very simple, but it's not something a human engineer would come up with,” said Sam Kriegman, the lead author of the study and a post-doctoral researcher at Tufts University and Harvard University.
For those concerned about the idea of self-replicating biotechnology, the researchers stress federal, state and institutional ethics experts also approved the study. It is also contained in a lab and can be extinguished easily.
“What presents risk is the next pandemic, accelerating ecosystem damage from pollution, (and) intensifying threats from climate change," said Joshua Bongard, a computer scientist and robotics expert at the University of Vermont.
"This is an ideal system in which to study self-replicating systems. We have a moral imperative to understand the conditions under which we can control it, direct it, douse it, exaggerate it."
The researchers also note that this technology has a host of potential benefits for humans, including regenerative medicine, cleaning ocean pollution and vaccine research.
Honda is set to build an electric vehicle battery plant next to its Alliston, Ont., assembly plant, which it is retooling to produce fully electric vehicles, all part of a $15-billion project that is expected to include up to $5 billion in public money.
New York’s highest court on Thursday overturned Harvey Weinstein’s 2020 rape conviction, finding the judge at the landmark #MeToo trial prejudiced the ex-movie mogul with improper rulings, including a decision to let women testify about allegations that weren’t part of the case.
Residents of John D'Or Prairie, a community on the Little Red River Cree Nation in northern Alberta, were told to take shelter Thursday morning during a police operation.
During a special winner celebration near their hometown, Doug and Enid shared the story of how they discovered they were holding a Lotto Max ticket worth $70 million and how they kept this huge secret for so long.
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The number of vacant jobs in Canada increased in February, while monthly payroll employment decreased in food services, manufacturing, and retail trade, among other sectors.
A London man has become the first person in Canada to receive a robotic assisted surgery on his spine. Dave Myeh suffered from debilitating, chronic back pain that led to sciatica in his right now and extreme pain in his lower back.
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The federal government says new capital gains tax changes will only affect the rich, but some realtors say they are hearing from 'middle-class' cottage owners who worry they may have to sell before the rules come into effect on June 25.
Residents of John D'Or Prairie, a community on the Little Red River Cree Nation in northern Alberta, were told to take shelter Thursday morning during a police operation.
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During a special winner celebration near their hometown, Doug and Enid shared the story of how they discovered they were holding a Lotto Max ticket worth $70 million and how they kept this huge secret for so long.
Two military horses that bolted and ran miles through the streets of London after being spooked by construction noise and tossing their riders were in a serious condition and required operations, a British government official said Thursday.
A Sydney bishop who was stabbed repeatedly in an alleged extremist attack blamed on a teenager has backed X Corp. owner Elon Musk's legal bid to overturn an Australian ban on sharing graphic video of the attack on social media.
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A reluctant Donald Trump returned to a New York City courtroom Thursday as his hush money trial resumed at the same time that the U.S. Supreme Court hears arguments in Washington over whether he should be immune from prosecution for actions he took during his time as president.
A ship travelling in the Gulf of Aden came under attack Thursday, officials said, the latest assault likely carried out by Yemen's Houthi rebels over Israel's ongoing war on Hamas in the Gaza Strip.
Iran's judiciary confirmed the death sentence of well-known Iranian rapper Toomaj Salehi but added that he is entitled to a sentence reduction, state media reported on Thursday.
Prime Minister Justin Trudeau is accusing Conservative Leader Pierre Poilievre of welcoming 'the support of conspiracy theorists and extremists,' after the Conservative leader was photographed meeting with protesters, which his office has defended.
Honda is set to build an electric vehicle battery plant next to its Alliston, Ont., assembly plant, which it is retooling to produce fully electric vehicles, all part of a $15-billion project that is expected to include up to $5 billion in public money.
The Canadian Medical Association asserts the Liberals' proposed changes to capital gains taxation will put doctors' retirement savings in jeopardy, but some financial experts insist incorporated professionals are not as doomed as they say they are.
A London man has become the first person in Canada to receive a robotic assisted surgery on his spine. Dave Myeh suffered from debilitating, chronic back pain that led to sciatica in his right now and extreme pain in his lower back.
Ontario is still playing catch up on routine vaccinations that many children missed during the pandemic and public health officials are warning that it could take years to solve the problem.
Nine-year-old Carter Vigh was having a great day last July 11, visiting a waterpark, enjoying a picnic lunch and playing soccer with other kids at a day camp run by his mother, Amber Vigh.
China launched a three-member crew to its orbiting space station on Thursday as part of its ambitious program that aims to put astronauts on the moon by 2030.
U.S. President Joe Biden signed legislation Wednesday that could ban TikTok in the U.S. while his campaign has embraced the platform and tried to work with influencers.
A new paper says a giant salmon that lived five million years ago in the coastal waters of the Pacific Northwest used tusk-like spikes as defense mechanisms and for building nests to spawn.
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The B.C. woman convicted of killing Reena Virk described the TV series dramatizing the notorious 1997 murder as disrespectful to the victim and her family.
The number of vacant jobs in Canada increased in February, while monthly payroll employment decreased in food services, manufacturing, and retail trade, among other sectors.
Boeing said Wednesday that it lost US$355 million on falling revenue in the first quarter, another sign of the crisis gripping the aircraft manufacturer as it faces increasing scrutiny over the safety of its planes and accusations of shoddy work from a growing number of whistleblowers.
New condo sales in the Toronto region dropped to the lowest quarterly total since the financial crisis in 2009 amid high interest rates and affordability issues, a new report has found.
During a special winner celebration near their hometown, Doug and Enid shared the story of how they discovered they were holding a Lotto Max ticket worth $70 million and how they kept this huge secret for so long.
For centuries, people have wondered what, if anything, might be lurking beneath the surface of Loch Ness in Scotland. When Canadian couple Parry Malm and Shannon Wiseman visited the Scottish highlands earlier this month with their two children, they didn’t expect to become part of the mystery.
The oldest living former major leaguer, Art Schallock turns 100 on Thursday and is being celebrated in the Bay Area and beyond as the milestone approaches.
Brad Marchand scored twice, including the winner in the third period, and added an assist as the Boston Bruins downed the Toronto Maple Leafs 4-2 to take a 2-1 lead in their first-round playoff series Wednesday
Honda is set to build an electric vehicle battery plant next to its Alliston, Ont., assembly plant, which it is retooling to produce fully electric vehicles, all part of a $15-billion project that is expected to include up to $5 billion in public money.
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Honda is set to build an electric vehicle battery plant next to its Alliston, Ont., assembly plant, which it is retooling to produce fully electric vehicles, all part of a $15-billion project that is expected to include up to $5 billion in public money.
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International aircraft giant Boeing has made a multi-million dollar commitment to the Saskatchewan Indian Institute of Technology (SIIT) to help address shortages in the aviation industry.
During a special winner celebration near their hometown, Doug and Enid shared the story of how they discovered they were holding a Lotto Max ticket worth $70 million and how they kept this huge secret for so long.
New York’s highest court on Thursday overturned Harvey Weinstein’s 2020 rape conviction, finding the judge at the landmark #MeToo trial prejudiced the ex-movie mogul with improper rulings, including a decision to let women testify about allegations that weren’t part of the case.
A London man has become the first person in Canada to receive a robotic assisted surgery on his spine. Dave Myeh suffered from debilitating, chronic back pain that led to sciatica in his right now and extreme pain in his lower back.
The London Health Sciences Centre (LHSC) Auxiliary is celebrating 100 years of service. Since 1999, the Auxiliary has made contributions, totaling over $10 million towards the hospital's critical needs.
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During a special winner celebration near their hometown, Doug and Enid shared the story of how they discovered they were holding a Lotto Max ticket worth $70 million and how they kept this huge secret for so long.
A 911 hang-up call has led to the arrest of two people in Chatham-Kent. Just after 6:30 a.m. on Wednesday, officers responded to an address on Bloomfield Road for the hang-up call.
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Mounties in Nanaimo, B.C., say two late-night revellers are lucky their allegedly drunken antics weren't reported to police after security cameras captured the men trying to steal a heavy sign from a downtown business.
The B.C. woman convicted of killing Reena Virk described the TV series dramatizing the notorious 1997 murder as disrespectful to the victim and her family.
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Newfoundlander Christian Sparkes has shot several films around his home province, but with his new psychological thriller 'The King Tide' he saw an opportunity to wander into one unique town that had eluded him over the years.