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What is cloud seeding and did it play any role in the Dubai floods?

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Stranded airline passengers and a cat submerged in floodwaters clinging to a car door handle became notable moments this week in Dubai as the normally arid city was inundated with historic levels of rain. Claims have gone viral that the deluge was brought on by cloud seeding, a technique that aims to increase precipitation, that is heavily utilized in the United Arab Emirates. 

But is it really to blame? 

Daniel Swain, a climate scientist at the University of California, Los Angeles, said that getting to the bottom of the “record-shattering extreme rainfall” requires breaking down the science behind the event and the technique. 

“There’s currently a disconnect in the online discourse between the kind of human activities that likely did affect it (greenhouse warming) versus those which have actually been the focus of the online conversation thus far (cloud seeding), and what this means for how we collectively understand our ability to actively affect the weather on different spatial and temporal scales,” he said in an emailed statement. 

What is cloud seeding? 

Many have questioned since the downpour in Dubai whether cloud seeding was to blame. But what is cloud seeding and how does it work exactly?

Cloud seeding is a technique used to improve precipitation. According to the Desert Research Institute, scientists do this by putting tiny particles called nuclei into the atmosphere that attach to clouds.

“These nuclei provide a base for snowflakes to form. After cloud seeding takes place, the newly formed snowflakes quickly grow and fall from the clouds back to the surface of the Earth, increasing snowpack and streamflow,” the institute says. 

In the Middle East, instead of precipitation in the form of snow, its cloud seeding program generates increased rain. 

Scientists typically go about cloud seeding in two ways – using either generators on the ground or distributing the nuclei via aircraft. 

Dubai's Record Rainfall Forces Flight Diversions and Floods City
A driver walks along a flooded highway after a rainstorm in Dubai, United Arab Emirates, on Wednesday, April 17, 2024. 

Christopher Pike/Bloomberg via Getty Images


What caused the rain in Dubai? 

But was the rain in Dubai from cloud seeding? 

“Did cloud seeding play a role? Likely no,” Swain said. “But how about climate change? Likely yes!” 

The world is continuing to see month after month of record-breaking heat and 2023 was the hottest year globally ever recorded. Scientists have found that warmer temperatures increase evaporation, resulting in more frequent and intense storms, such as the one that occurred in Dubai. Those conditions also fuel other extreme weather events, including droughts, putting opposing forces at intense odds that will likely strain communities without adequate adaptation. 

Andrew Kruczkiewicz, senior researcher at Columbia Climate School, told CBS News he doesn’t believe there’s any current evidence at this time that cloud seeding pushed the downpour over the edge. 

“This event was forecast fairly well days in advance and I think it’s unlikely that a cloud seeding operation would move forward given the well-forecast intense rainfall,” he said.

The nation’s National Emergency Crisis and Management Authority issued weather warnings on Monday before the storm’s arrival, urging people to comply with local instructions from authorities and asking them to stay at home and only leave in the case of an emergency. 

Meteorologist Ryan Maue, former chief scientist at the U.S. National Oceanic and Atmospheric Administration, gave the Associated Press a more definitive answer: “It’s most certainly not cloud seeding.” 

“If that occurred with cloud seeding, they’d have water all the time,” he said. “…when it comes to controlling individual rain storms, we are not anywhere close to that. And if we were capable of doing that, I think we would be capable of solving many more difficult problems than creating a rain shower over Dubai.”

The deluge, he said, “speaks more to questions around what are the resilience measures that are integrated into the urban planning standard operating procedures.” 

“Almost everywhere on Earth there is a risk of flash flooding,” he said. “Yet, since it’s not the most frequent type of extreme event, sometimes it’s lower on the priority list when decisions need to be made around infrastructure or resilience, or just urban development more broadly.”  

How significant was the flooding in Dubai?  

More than 5.59 inches of rain fell over Dubai within 24 hours. While a half-foot of rain may not seem like much numerically, that’s more than what the city sees in an average year, and other parts of the UAE saw even higher levels. 

It was a “historic weather event,” the state-run WAM news agency said, adding that it was beyond “anything documented since the start of data collection in 1949.” 

Dubai is normally dry and with a downpour like this being so unprecedented, the city’s infrastructure was not prepared. The drainage systems were overwhelmed and Dubai International Airport, one of the busiest in the world, had to temporarily halt operations. One plane passenger told Reuters many people were waiting more than 12 hours to be able to resume travel. Footage from the airport shows planes taxiing in eerie floodwaters. 

“Over a year’s worth of rainfall was experienced in just a few hours,” Kruczkiewicz told CBS News. “And why that’s important to to understand is that when you see this amount of rainfall in semi-arid arid area, the soil isn’t designed to filter the water as fast as in other areas. … You don’t need that much water falling or rainfall falling in a short period of time to cause major issues.” 

Is cloud seeding effective? 

According to the Desert Research Institute, how effective cloud seeding is depends on the specific project in which it’s being used. Citing several studies, the institute said it’s helped increase overall snowpack in some areas by at least 10% per year. Another study found that a five-year project in New South Wales, Australia resulted in a 14% snowfall increase.  

The UAE’s National Center of Meteorology launched the Research Program for Rain Enhancement Science to advance the technology, saying that for dryer regions across the world, cloud seeding “could offer a viable, cost-effective supplement to existing water supplies.” Many regions even beyond the Middle East have been suffering from water scarcity issues, including Colombia, Mexico and Hawaii





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Rex Heuermann, alleged Long Island serial killer, due in court as prosecutors promise major development

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Rex Heuermann due in court as prosecutors are expected to unveil significant development in case


Rex Heuermann due in court as prosecutors are expected to unveil significant development in case

02:17

RIVERHEAD, N.Y. Accused Gilgo Beach serial killer Rex Heuermann is due back in court on Long Island Tuesday morning, and prosecutors are promising a major development in the case. 

The hearing is set to begin after 9:30 a.m. A press conference is expected at the Suffolk County DA’s office shortly after. We will bring that news conference to you live on CBS News New York

The judge has previously indicated he wanted to set a trial date at today’s hearing. 

Heuermann’s last court appearance was back in October. 

Heuermann accused of killing 6 women, so far

Heuermann, 61, has pleaded not guilty to murder charges in the deaths of six women between 1993 and 2011. The remains of 11 people were discovered around Gilgo Beach during that period, and investigators believe Heuermann may be linked to other killings. The Suffolk County DA has said there could be future indictments. 

Four of the victims had their bodies disposed of near Gilgo Beach. Two others were murdered as far back as 2003 and 1993. Each of them had been involved in sex work. 

Prosecutors allege Heuermann is linked to the murders through DNA, burner phone data, a description of his truck, internet searches and what they call a blueprint for how to get away with murder. 

Attorneys wrangle over DNA, volume of evidence

A key point of contention in the new DNA evidence is called SNP, which prosecutors say links the hairs of victims to Heuermann. The defense has called an outside lab’s methods of genetic testing unproven and “magic.” 

Another hurdle for prosecutors is the sheer volume of evidence. The DA says they’re struggling to keep up with the costs of processing the 120 terabytes of data and 400 electronic devices seized. 

Heuermann’s attorney says his client is looking forward to his day in court and will be pursuing a change of venue, claiming the jury pool in Suffolk has been “poisoned.” 

Heuermann remains in isolation in jail.



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Osiel Cárdenas Guillén — notorious drug lord nicknamed “Friend Killer” — returned to Mexico after U.S. prison sentence

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Notorious drug lord Osiel Cárdenas Guillén has been returned to Mexico after serving a U.S. sentence and was quickly re-arrested and sent to a maximum security prison to face Mexican charges. 

There had been nervousness about the impending return of Cárdenas Guillén, who once led the feared Gulf cartel in northeastern Mexico before he was arrested and extradited to the United States in 2007.

The U.S. Homeland Security Department confirmed in its social media accounts Monday that Cárdenas Guillén had been returned after serving 14 years in U.S. custody, most of his 25-year U.S. prison sentence. He is a Mexican citizen, so presumably he was deported.

“The successful removal of Osiel Cardenas, a notorious international fugitive, underscores our unwavering commitment to public safety and justice,” said Enforcement and Removal Operations Chicago Field Office Director Samuel Olson in a statement.

A Mexican federal official who was not authorized to be quoted by name said Cárdenas Guillén had immediately been taken into custody in Mexico on drug, organized crime and money-laundering charges.

U.S. deports notorious drug lord Osiel Cardenas Guillen to Mexico
U.S. Immigration and Customs Enforcement police officers hold drug lord Osiel Cardenas Guillen, who was deported and handed to Mexican authorities in Tijuana December 16, 2024, as he stands for a picture in this undated handout photograph.  

U.S. Immigration and Customs Enforcement/Handout via REUTERS


The official said Cárdenas Guillén was being held at the country’s top maximum-security Altiplano prison just west of Mexico City.

Homeland Security Investigations posted photos of a paunchy, balding, bespectacled Cárdenas Guillén being escorted by two officers in helmets and flak vests, and the being walked over a border bridge.

The image contrasts with the drug lord’s fearsome reputation for violence in Mexico.

Nicknamed “El Mata Amigos” (“Friend Killer”), he recruited former Mexican special forces soldiers to form his personal guard. The former head of the Gulf cartel was known for his brutality. He created the most bloodthirsty gang of hitmen Mexico has ever known, the Zetas, which routinely slaughtered migrants and innocent people.

The 57-year-old native of the border city of Matamoros, Mexico, moved tons of cocaine and made millions of dollars through the Gulf cartel, based in the border cities of Reynosa and Matamoros.

After his arrest in the northeast border state of Tamaulipas, he was extradited in 2007 to the United States, where he was sentenced in 2010 to 25 years in prison and ordered to pay $50 million.

At that time, the Justice Department alleged that Cardenas Guillen threatened to kill a Texas sheriff’s deputy who was working as an undercover ICE agent because he refused to deliver almost 1,000 kilograms of marijuana. 



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The Electoral College votes to confirm results for the 2024 presidential election today. Here’s what to know.

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At state capitols across the U.S. Tuesday, the presidential electors will be gathering to cast their electoral votes, formalizing President-elect Donald Trump’s victory over Vice President Kamala Harris in the 2024 election. 

It’s largely a ceremonial vote, the next step after the presidential election. When Americans cast their ballots on Election Day, they’re technically voting for a slate electors committed to supporting their choice for president and vice president.

How does the Electoral College work?

The rules governing the Electoral College are outlined by the 12th Amendment

Presidential electors, according to the amendment, “shall name in their ballots the person voted for as President, and in distinct ballots the person voted for as Vice-President, and they shall make distinct lists of all persons voted for as President, and of all persons voted for as Vice-President, and of the number of votes for each, which lists they shall sign and certify.”

The political parties choose the slate of electors ahead of the general election. 

After Election Day, all the votes are counted and then certified by each state. According to the 2022 Electoral Count Reform Act, the deadline to certify the results is set at six days before the electors are scheduled to meet, traditionally on the first Tuesday after the second Wednesday in December.

The Electoral Count Reform Act of 2022 also requires that each state determine a state official — the governor unless specified otherwise — to be responsible for submitting the “certificate of ascertainment” that identifies the state’s electors and includes a security feature. 

What were the 2024 Electoral College results? 

Trump won 312 Electoral College votes to Harris’ 226. See state-by-state results here and below. 

Nationally, Trump also won the popular vote, winning 77.2 million votes to Harris’ 75 million. 

How many electoral votes does each state have?

The Electoral College consists of 538 electors, and a majority of 270 is needed to become president. 

Each state’s electoral votes are equal to the number of representatives they have in the House, plus two senators. 

While the number of Electoral College votes has remained at 538 since 1964, the number of votes per state changes to match congressional apportionment after the decennial census. Between the 2020 election and the 2024 election, Texas gained two Electoral College votes, while five other states — Colorado, Florida, Montana, North Carolina and Oregon — gained one electoral vote each. Six states lost an electoral vote: California, Illinois, Ohio, Michigan, New York, Pennsylvania and West Virginia.

The map below shows the changes by state between the 2020 election and the 2024 election. 

Does each elector have to vote with the state election results?

Forty-eight states and Washington, D.C., are winner-take-all, so the winner of the popular vote in the state wins all of the state’s electoral votes. Maine and Nebraska allocate their electors based on the winner of the popular vote within each Congressional District and then two “at-large” electors are determined based on winner of the statewide popular vote. 

The electors are supposed to vote in accordance with the outcome of the popular vote in their state. The Constitution does not require electors to vote with the winner of the popular vote, but most states have laws that nullify the votes of “faithless electors.” The Supreme Court ruled in 2020 that states can punish these “faithless electors.”

According to FairVote, there have been 90 “deviant” votes cast by electors for president since the founding of the Electoral College, although the majority of these were due to the death of a party’s nominee rather than a true deviation from the voters’ intent. 

There have also been 75 faithless electors for vice president, for a total of 165 faithless electors throughout history, according to FairVote. 

After the 2020 election, so-called “fake” Republican electors in seven battleground states won by President Biden met anyway and cast phony votes for Trump. State criminal charges have been filed against fake electors in Georgia, Michigan and Nevada. In charging Trump for attempting the overturn the election results, special counsel Jack Smith said these fake electors were part of a plan to overturn the election, orchestrated by pro-Trump attorneys with Trump’s support. Those charges have been dismissed since Trump’s victory in the 2024 election. 

What’s next after the Electoral College certification?

After the results are signed and certified, they are sent to Harris, acting as the president of the Senate. The vote certificates must be received by the fourth Wednesday in December, which this year is Dec. 25. The archivist then transmits the sets of certificates to Congress on or before the new Congress meets on Jan. 3, 2025.

On Jan. 6, 2025, Congress meets in a joint session to count the Electoral College votes, overseen by Harris. After the votes are counted, the vice president announces the winner of the election. 

Trump and Vice President-elect JD Vance will take the oath of office at the inauguration at noon on Jan. 20, 2025.



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