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Luke Iseman, the founder of Make Sunsets, is about to launch a weather balloon filled with sulfur dioxide and helium into the air in Nevada.

Photo courtesy Make Sunsets

The solar geoengineering startup that had to cease operations in Mexico after the government cracked down on the idea of putting chemicals into the atmosphere to reflect sunlight away from the Earth has reemerged to launch balloons in Nevada.

On Tuesday, Make Sunsets announced it had completed three balloon launches near Reno, Nevada, each of which contained less than 10 grams of sulfur dioxide, which is the most commonly sited aerosol particle discussed in conversations about solar geoengineering. Two of the balloons launched also had location trackers, and one had a camera, too.

The idea of solar geoengineering has been around for decades and generally refers to spraying aerosol particles into the upper atmosphere in order to reflect the sun’s rays away from earth and back to space, cooling the earth and temporarily mitigating the effects of climate change.

Essentially, solar geoengineering is mimicking what happens when a volcano erupts, and it’s known to work. When Mount Pinatubo in the Philippines released thousands of tons of sulfur dioxide into the stratosphere in the 1991 eruption, the global temperature of the earth was lowered on average by about 1 degree Fahrenheit, according to the U.S. Geological Survey.

Solar geoengineering is not a solution to climate change, and nobody who studies it rigorously suggests it should be. It’s a temporary stopgap measure.

In addition, while releasing sulfur dioxide particles will cool the earth quickly and relatively inexpensively, it’s also dangerous. Injecting sulfur dioxide into the atmosphere could damage the ozone layer, cause respiratory illness and create acid rain.

But as the effects of climate change become more obvious, people are beginning to take the idea more seriously.

The White House is coordinating a five-year research plan into solar geoengineering, the quadrennial U.N.-backed Montreal Protocol assessment report included an entire chapter addressing stratospheric aerosol injection (more colloquially called solar geoengineering), and Dustin Moskovitz, a co-founder of Facebook, is funding solar geoengineering research via his philanthropic organization, Open Philanthropy.

While momentum is building, there isn’t any international governance rules about how to study and potentially regulate the idea.

Luke Iseman, a serial inventor and the former director of hardware at Y Combinator, launched Make Sunsets in October in an effort to push that envelope. San Mateo-headquartered venture capital firm BoostVC invested $500,000 in the startup and Iseman brought in a co-founder, Andrew Song.

The launches in Nevada earlier in February occurred at the Rancho San Rafael Regional Park in Reno, , where an annual hot-air balloon festival takes place, Iseman told CNBC.

They chose Nevada “because it’s in the U.S., we’re very confident we know and followed all applicable rules, know the terrain well from past adventures, and, we didn’t want to interfere with a friend’s efforts to get a marine cloud brightening project permitted in California,” Iseman told CNBC.

The Nevada launch was previously detailed by Time reporters, who were there. It was a shoe-string MacGyver-ed event orchestrated out of a hotel room, with a grill and weather balloon equipment. But, as evidenced by the images embedded below, shared with CNBC by Make Sunsets, the balloons lifted off.

Make Sunsets team is filling sulfur dioxide in a bag preparing for launch.

Photo courtesy Make Sunsets

Make Sunsets team is weighing the bag filled with sulfur dioxide gas in a bag preparing for launch.

Photo courtesy Make Sunsets

Make Sunsets is filling the balloon with helium here.

Photo courtesy Make Sunsets

Here, founder Luke Iseman is preparing to release the weather balloon filled with sulfur dioxide and helium into the atmosphere. Make Sunsets says this is the first deployment of SAI, or stratospheric aerosol injection, another and more specific name for solar geoengineering.

Photo courtesy Make Sunsets

Luke Iseman, the founder of Make Sunsets, is about to launch a weather balloon filled with sulfur dioxide and helium into the air in Nevada.

Photo courtesy Make Sunsets

Make Sunsets launching a weather balloon filled with sulfur dioxide and helium into the air in Nevada.

Photo courtesy Make Sunsets

A view from the Make Sunsets balloon launched in Nevada.

Photo courtesy Make Sunsets

A view from the Make Sunsets balloon launched in Nevada.

Photo courtesy Make Sunsets

Iseman has both idealistic and practical goals.

“Most importantly: We need to cool earth to save millions of lives, hundreds of thousands of species, and buy the time we need to decarbonize,” Iseman told CNBC.

To make the business sustainable, Make Sunsets is selling cooling credits, which gives companies and individuals a way to offset the effects of their carbon emissions. But the startup has yet to deliver.

“We have 2,790 cooling credits ordered by 58 paying customers that we haven’t yet delivered,” Iseman told CNBC. “On one hand, we’re working hard on a controversial project to cool earth. On the other, we’re a startup with the same basic challenge as any other: get customers to pay more for what we’re selling than it costs to make it.”

Make Sunsets said it made the FAA aware that it was releasing a balloon.

The FAA provided the following statement: “The FAA has comprehensive regulations for safely operating unmanned free balloons. Among other things, the regulations require the balloon to be equipped so it can be tracked by radar, and the operator to notify the FAA prior to and at the time of launch, monitor and record the balloon’s course, make position reports to the FAA as requested, and notify the FAA when the balloon begins its descent and its expected trajectory.”

Correction: A previous version of this story misstated what the balloons contained. All three of them had sulfur dioxide.

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Zuckerberg says Biden administration pushed Meta ‘super hard’ to take down vaccine content

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Zuckerberg says Biden administration pushed Meta 'super hard' to take down vaccine content

Meta CEO Mark Zuckerberg appears at the Meta Connect event in Menlo Park, California, on Sept. 25, 2024. Meta debuted its first pair of augmented reality glasses, devices that show a combined view of the digital and physical worlds, a key step in Zuckerberg’s goal of one day offering a hands-free alternative to the smartphone.

David Paul Morris | Bloomberg | Getty Images

Meta CEO Mark Zuckerberg told Joe Rogan in a podcast published on Friday that his company was pressured by the Biden administration to remove content on side effects of Covid vaccines.

Early in a conversation that lasted about three hours, Zuckerberg told Rogan that he’s generally “pretty pro rolling out vaccines” and that they are “more positive than negative.”

“But I think that while they’re trying to push that program, they also tried to censor anyone who is basically arguing against it,” Zuckerberg said.

A Biden administration representative didn’t immediately respond to a request for comment.

The remarks come days after Meta said it would stop relying on third parties to check facts published on its widely used applications and instead turn to community notes, letting users add commentary regarding truthfulness. The strategy puts Meta more inline with X, whose owner, Elon Musk, has been advising President-elect Donald Trump and was a major backer of his campaign.

It’s also the latest in a string of announcements and comments following Trump’s election that appear targeted at appeasing the incoming president. Last week, Meta replaced its president of global affairs, Nick Clegg, with Joel Kaplan, the company’s current policy vice president and a former Republican Party staffer.

Meta was one of several large technology companies to announce that it was contributing $1 million to Trump’s inauguration, NBC News reported.

Zuckerberg has expressed criticism in the past about the Biden administration’s handling of Covid-related content.

In a letter to the Republican-led House Judiciary Committee in August, Zuckerberg said the administration “pressured” Meta to “censor” Covid-19 content, adding that he regretted some of the decisions the company made following those requests.

“And they pushed us super hard, to take down the things that were honestly were true,” Zuckerberg told Rogan. “They basically pushed us and said, you know, anything that says that vaccines might have side effects, you basically need to take down.”

Zuckerberg didn’t specify who from the White House made the requests, acknowledging that “I wasn’t involved in those conversations directly.” But he said the company’s response was that it wasn’t going to take down content that “is kind of inarguably true.”

The Food and Drug Administration said in 2021 that headache, fatigue, muscle aches, nausea and fever were the most common side effects of Johnson & Johnson’s single-shot Covid vaccine. Worldwide, Covid vaccines are credited with saving tens of millions of lives a year when the pandemic was raging.

On a separate matter, Zuckerberg said that the U.S. government hasn’t done enough to protect its technology industry, leaving too much power in the hands of regulators abroad. He said the European Union has fined technology companies more than $30 billion over the past 20 years.

“It’s one of the things that I’m optimistic about with President Trump, is I think he just wants America to win,” Zuckerberg said.

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Amazon to shut down ‘Try Before You Buy’ rival to Stitch Fix

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Amazon to shut down 'Try Before You Buy' rival to Stitch Fix

Packages with the logo of Amazon are transported at a packing station of a redistribution center of Amazon in Horn-Bad Meinberg, western Germany, on Dec. 9, 2024.

Ina Fassbender | Afp | Getty Images

Amazon is shutting down “Prime Try Before You Buy,” a competitor to Stitch Fix that allowed Prime members to try out clothes, shoes and accessories and only pay for items they wanted to keep.

The service will be discontinued on Jan. 31, according to a notice posted to Amazon’s website. The notice then directs users to browse Amazon’s fashion homepage.

Try Before You Buy is the latest example of Amazon CEO Andy Jassy’s ongoing efforts to rein in costs across the company. Beginning in 2022 and extending throughout 2024, Amazon initiated the largest layoffs in the company’s history, cutting more than 27,000 jobs across the company. It has also shuttered several of its experimental projects, such as a speedy brick-and-mortar delivery service, its telehealth offering and a quirky video-calling device for kids.

An Amazon spokesperson confirmed the move, which was first reported by The Information.

“Given the combination of Try Before You Buy only scaling to a limited number of items and customers increasingly using our new AI-powered features like virtual try-on, personalized size recommendations, review highlights, and improved size charts to make sure they find the right fit, we’re phasing out the Try Before You Buy option, effective January 31, 2025,” the spokesperson told CNBC in a statement.

Amazon rolled out the service, which was previously called Prime Wardrobe, in 2017. It was only available to members of Amazon’s $139-per-year Prime subscription program, which also includes perks such as speedy shipping and access to streaming services.

Users could test out a mix of luxury, staple and Amazon-owned brands, and return whatever they didn’t want to keep for free within seven days of receiving the items. The service operated similarly to wardrobe subscription services including Stitch Fix and Rent the Runway, as well as newer entrants such as Urban Outfitters‘ Nuuly.

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Meta announces end of DEI programs. Read the internal memo

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Meta announces end of DEI programs. Read the internal memo

Companies are walking back DEI promises: Here's what you need to know

Meta on Friday told employees that its plans to end a number of internal programs designed to increase the company’s hiring of diverse candidates, the latest dramatic change ahead of President-elect Donald Trump‘s second White House term.

Janelle Gale, Meta’s vice president of people, made the announcement on the company’s Workplace internal communications forum.

Among the changes, Meta is ending the company’s “Diverse Slate Approach” of considering qualified candidates from underrepresented groups for its open roles. The company is also putting an end to its diversity supplier program and its equity and inclusion training programs.

Gale also announced the disbanding of the company’s diversity, equity and inclusion, or DEI, team, and she said that Meta Chief Diversity Officer Maxine Williams will move into a new role focused on accessibility and engagement.

Several Meta employees responded to Gale’s post with comments criticizing the new policy.

“If you don’t stand by your principles when things get difficult, they aren’t values. They’re hobbies,” one employee posted in a comment that got reaction from more than 600 colleagues.

The DEI policy change follows a number of sweeping policy reversals by the social media company this month. Last week, Meta replaced global affairs head Nick Clegg with Joel Kaplan, a veteran at the company with longstanding ties to the Republican Party. On Tuesday, Mark Zuckerberg announced a new speech policy that included bringing an end to the company’s third-party fact-checking program.

Axios was first to report the DEI changes at the social media company. Meta didn’t immediately respond to a request for comment.

Below is Gale’s full internal memo, which CNBC obtained.

Hi all,

I wanted to share some changes we’re making to our hiring, development, and procurement practices. Before getting into details, there is some important background to lay out:

The legal and policy landscape surrounding diversity, equity and inclusion efforts in the United States is changing. The Supreme Court of the United States has recently made decisions signaling a shift in how courts will approach DEI. It reaffirms long standing principles that discrimination should not be tolerated or promoted on the basis of inherent characteristics. The term “DEI” has also become charged, in part because it is understood by some as a practice that suggests preferential treatment of some groups over others.

At Meta, we have a principle of serving everyone. This can be achieved through cognitively diverse teams, with differences in knowledge, skills, political views, backgrounds, perspectives, and experiences. Such teams are better at innovating, solving complex problems and identifying new opportunities which ultimately helps us deliver on our ambition to build products that serve everyone. On top of that, we’ve always believed that no one should be given — or deprived — of opportunities because of protective characteristics, and that has not changed.

Given the shifting legal and policy landscape, we’re making the following changes:

  • On hiring, we will continue to source candidates from different backgrounds, but we will stop using the Diverse Slate Approach. This practice has always been subject to public debate and is currently being challenged. We believe there are other ways to build an industry leading workforce and leverage teams made up of world-class people from all types of backgrounds to build products that work for everyone.
  • We previously ended representation goals for women and ethnic minorities. Having goals can create the impression that decisions are being made based on race or gender. While this has never been our practice, we want to eliminate any impression of it.
  • We are sunsetting our supplier diversity effort within our broader supplier strategy. This effort focused on sourcing from diverse-owned businesses; going forward, we will focus our efforts on supporting small and medium sized businesses that power much of our economy. Opportunities will continue to be available to all qualified suppliers, including those who are part of the supplier diversity program.
  • Instead of equity and inclusion training programs, we will build programs that focus on how to apply fair and consistent practices that mitigate bias for all, no matter your background.
  • We will no longer have a team focused on DEI. Maxine Williams is taking on a new role at Meta focused on accessibility and engagement.

What remains the same are the principles we’ve used to guide our People Practices:

  1. We serve everyone. We are committed to making our products accessible, beneficial and universally impactful for everyone.
  2. We build the best teams with the most talented people. This means sourcing people from a range of candidate pools but never making hiring decisions based on protected characteristics, (e.g., race, gender, etc.). We will always evaluate people as individuals.
  3. We drive consistency in employment practices to ensure fairness and objectivity for all. We do not provide preferential treatment, extra opportunities or unjustified credit to anyone based on protected characteristics. Nor will we devalue impact based on these characteristics.
  4. We build connection and community. We support our employee communities, people who use our products and those in the communities. We operate our employee community groups (MRGs) continue to be open to all.

Meta has the privilege to serve billions of people every day. It is important to us that our products are accessible to all, and useful in promoting economic growth and opportunity around the world. We continue to be focused on serving everyone and building a multi-talented, industry-leading workforce from all walks of life.

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