The eruption this month of an underwater volcano near Tonga was hundreds of times more powerful than the Hiroshima atomic bomb, according to NASA.
Jim Garvin, chief scientist at , said the eruption of the Hunga-Tonga-Hunga-Ha'apai volcano on January 15 released "hundreds of times the equivalent mechanical energy of the ," referring to one of two atomic bombs dropped by the United States on Japan during World War II.
"This is a preliminary estimate, but we think the amount of energy released by the eruption was equivalent to somewhere between 4 to 18 megatons of TNT," Garvin said on NASA's Earth Observatory website.
In comparison, scientists estimate the 1980 Mount St. Helens eruption released 24 megatons of energy, and Krakatoa -- one of the biggest volcanic events in history -- erupted in 1883 with 200 megatons, according to NASA.
The eruption near Tonga sent volcanic material surging as high as 40 kilometres (25 miles) into the atmosphere and generated tsunami waves up to 49 feet (15 metres) high that hit parts of the archipelago including the Pacific nation's main island.
A volcanic cloud extended to cover all of the country's roughly 170 islands, according to Tonga's Prime Minister, impacting the entire population of more than 100,000 people.
Garvin and a team of international researchers evaluated changes in land mass of the volcano since 2015, when an eruption connected two pre-existing islands, Hunga Ha'apai and Hunga Tonga, into one land mass.
Following the eruption this month, all of the new land has gone along with "large chunks" of the two pre-existing islands, the researchers said.
The eruption and tsunami killed at least three people, destroyed hundreds of homes and left remote islands cut off from the world with no communications. Photos show entire island communities blanketed by thick volcanic ash and debris.
Aid agencies and Tongan politicians warned of potential food shortages after crops were ruined by the ash as rescue workers raced to deliver safe drinking water to the islands.
The first contactless aid flights arrived in Tonga last week, with the coronavirus-free nation taking precautions to keep the virus out.
Software company Mustimuhw Information, which develops medical records systems built on a foundation of Indigenous traditions and values, is allowing health providers to capture data informed by cultural practices.
Lebanon's Hezbollah was still handing its members new Gold Apollo branded pagers hours before thousands blew up this week, two security sources said, indicating the group was confident the devices were safe despite an ongoing sweep of electronic kit to identify threats.
Following the MIND diet for 10 years produced a small but significant decrease in the risk of developing thinking, concentration and memory problems, a new study found.
The province's public security minister said he was "shocked" Thursday amid reports that a body believed to be that of a 14-year-old boy was found this week near a Hells Angels hideout near Quebec City.
An Ontario man says it is 'unfair' to pay a $1,500 insurance surcharge because his four-year-old SUV is at a higher risk of being stolen.
The federal firearm buyback program has cost taxpayers nearly $67.2 million since it was announced in 2020, but it still hasn't collected a single gun.
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The Royal Canadian Mounted Police has lost 205 firearms since 2020, including more than 120 handguns and at least five fully automatic weapons like machine-guns.
For most people, dinner on a cruise ship is a time to relax. But when influencer couple Abby and Matt Howard decided to kick back with a dinner à deux, they ended up kicking up a storm.
In the middle of the small crowd — near the tents, the lineup of kids awaiting face painting, the snack table — stood a jubilant Chiara Padovani. 'When I say 'tenant, you say 'power,'' she commanded to several dozen tenants, who chanted back with gusto. What looked like a summer block party in front of two north-end Toronto apartment buildings last month was a celebration of what renters who withheld payments for months called a 'huge victory.'
The University of Ottawa's special advisor on antisemitism says he has resigned following posts he made on social media celebrating the pager explosions in Lebanon this week.
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Friends and strangers have set up a makeshift memorial outside the home of a five-year-old boy who was found dead yesterday in Coteau-du-lac.
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The lawyer for a B.C. RCMP officer convicted of obstruction for telling a witness to delete cellphone video following the violent 2017 arrest of Dale Culver has requested a stay of proceedings.
Israel warned U.S. Defence Secretary Lloyd Austin in a call Tuesday that a military operation was going to take place in Lebanon but gave no details, U.S. officials said Thursday. The same day of the call, in an attack widely blamed on Israel, thousands of pagers belonging to Hezbollah militants exploded.
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A federal law enforcement agency confirmed it's opened an investigation into Robert F. Kennedy Jr. after he allegedly cut off the head of a dead whale and took it home two decades ago.
Mexican President Andres Manuel Lopez Obrador blamed the United States in part on Thursday for the surge in cartel violence terrorizing the northern state of Sinaloa which has left at least 30 people dead in the past week.
In a closely watched First Amendment rights case, a former University of Wisconsin campus chancellor who was fired after making pornographic films with his wife prepared to argue Friday for keeping his tenured teaching position even as he faces removal for unethical behavior.
Lebanon's Hezbollah was still handing its members new Gold Apollo branded pagers hours before thousands blew up this week, two security sources said, indicating the group was confident the devices were safe despite an ongoing sweep of electronic kit to identify threats.
Prime Minister Justin Trudeau tapped Treasury Board President Anita Anand to take on additional duties as Canada's minister of transport on Thursday.
Conservative Leader Pierre Poilievre and NDP Leader Jagmeet Singh got into a heated exchange in the House of Commons on Thursday, just minutes after Singh announced his party would not be supporting the Conservatives' first non-confidence motion against Prime Minister Justin Trudeau's government.
The head of Via Rail repeatedly told MPs a train delay over the Labour Day long weekend was an isolated incident, despite a similar event two years ago.
The Nunavut government says it will provide immunization against respiratory syncytial virus to all infants in the territory this fall, a policy change that one pediatric infectious diseases specialist has been advocating for decades.
Ontario’s Minister of Sport, Neil Lumsden, will donate his brain to research.
Software company Mustimuhw Information, which develops medical records systems built on a foundation of Indigenous traditions and values, is allowing health providers to capture data informed by cultural practices.
Lebanese authorities on Thursday banned walkie-talkies and pagers from being taken on flights from Beirut airport, the National News Agency reported, after thousands of such devices exploded during a deadly attack on Hezbollah this week.
If something looks too good to be true, it might be. That's the message from Saskatchewan horticulturists after customers have come into their stores hoping to buy purple apple trees this month.
NASA scientists have successfully replicated spider-like shapes found on the surface of Mars in a laboratory setting for the first time.
Lawyers representing the producers of 'Russians at War' say they may pursue legal action against Ontario's public broadcaster for pulling support for the controversial documentary amid outcry from the Ukrainian community and some Canadian politicians.
Viewers of Jeopardy got a chance to test their knowledge of trivia about B.C.'s biggest city Wednesday night.
British actress Florence Pugh has revealed that shaving her head for her latest movie role was a 'really bizarre' experience that sent her body 'into a bit of trauma.'
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Shohei Ohtani became the first major league player to hit 50 home runs and steal 50 bases in a season, with the Los Angeles Dodgers star going deep twice to reach the half-century mark and swiping two bags to get to 51 against the Miami Marlins on Thursday.
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Toronto Blue Jays shortstop Bo Bichette returned to the 10-day injured list Thursday due to a right middle finger fracture.
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The plant was expected to produce batteries for a million electric vehicles a year. Once up and running, it was supposed to create hundreds of permanent jobs in a small southeastern Ontario municipality. But two years later, spending on the construction of the Umicore plant has been delayed in what the company calls a "significant worsening of the EV market context."
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Gas prices increased in all three Maritime provinces for the first time in more than a month.
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Thomas Hamp says he believed secret police were out to kidnap, torture, and kill him when he fatally stabbed his girlfriend Emily Sanche in February of 2022.
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An Ontario man says it is 'unfair' to pay a $1,500 insurance surcharge because his four-year-old SUV is at a higher risk of being stolen.
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Police were focusing their attention on the northeast corner of Richmond and Horton, with members of the emergency response unit taking up positions at the scene.
Shedden, southwest of London, hasn’t changed much in decades – but word is spreading that hundreds of new residents could soon be calling the town home.
Two men from Barrie have been charged after a deadly shooting at a park in Keswick on Wednesday.
A growing group of brides and wedding photographers from across the province say they have been taken for tens of thousands of dollars by a Barrie, Ont. wedding photographer.
Ontario Provincial Police executed a search warrant in Walkerton.
Standing up, speaking out, and showing solidarity — survivors and supporters gathered in the core to take back the night in Windsor. The city is just one of a growing list of communities that have declared intimate partner violence (IPV) an epidemic.
The Windsor Police Service (WPS) has seized over $56,000 in drugs and have arrested one suspect.
SERVEONE Canada, a global procurement solution company, has begun Canadian operations in Tecumseh.
In a rare move, the Greater Victoria School District Board of Education has been slapped with a ministerial order from the province requiring it to update a student safety plan – drawing concern around political posturing leading up to an election.
The Union of B.C. Municipalities is asking the provincial government to make transit free for teenagers.
To appreciate why Mimi Vandermolen is so pleased to notice one particular vehicle she’s walking past, you need to know that seeing this many cars in one place would have been unimaginable when she was growing-up in the post-war Netherlands.
A pair of runaway pigs are in the custody of an animal sanctuary in the Okanagan after evading police and volunteers for hours earlier this week.
The Red Bridge, a historic landmark in Kamloops, B.C., was completely destroyed by fire early Thursday morning.
Animal protection officers in British Columbia have rescued three pit bulls – including one that gave birth to 10 puppies – from a rat-infested home in Kelowna.
A Vulcan, Alta., man has been charged with a Lethbridge woman's murder after her body was found in the Oyen area.
A Lethbridge couple got a good reminder as to why you should keep your vehicle doors locked at all times.
Lethbridge residents who live near the police range can expect to hear plenty of shots fired Wednesday and Thursday.
A new community health profile in the Algoma District shows the area is significantly below provincial averages in a number of health metrics.
North Bay Police Service says one person has died following an industrial accident at the Ontario Northland Transportation Commission Rail Yard on Tuesday.
Three northern Ontario residents are charged with drug trafficking after the vehicle they were in got stuck along a bush road off Highway 17 on Monday.
Newfoundland and Labrador's chief medical officer is monitoring the rise of whooping cough infections across the province as cases of the highly contagious disease continue to grow across Canada.
A 16-year-old biennial event aimed at fostering business in the country's eastern Arctic and northern regions has been cancelled indefinitely as a dispute unfolds between Inuit in Canada and a Labrador group claiming to share their heritage.
Jim Lester’s farm hopped on the cow-cuddling trend in early August, and his time slots have been pretty well sold out ever since.
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