Rethinking air conditioning amid climate change

ACs and refrigerators help keep people safe—but they also further warm the planet.

Rethinking air conditioning amid climate change

Enlarge (credit: Jupiter Images | Getty)

It was a monumental day for the environmental movement more than 30 years ago when all 198 countries in the world agreed on something for the first and only time ever. They signed on to the Montreal Protocol, making a pact to phase out a roster of chemicals that damage the Earth’s ozone layer. Chief among these were the chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons used by the cooling and refrigeration industry. Alternatives, such as hydrofluorocarbons (HFCs), were quickly found.

But in recent years, scientists have come to realize that the Montreal Protocol of 1987 might have traded an immediate problem for a long-term one. Though HFCs don’t cause the same damage to the ozone layer as CFCs do, the chemicals have warming potentials hundreds to thousands of times higher than that of CO2—making their growing global use a cause for concern.

The 20th-century industrial revolution saw a major boom in the air-conditioning and refrigeration industry in Europe and North America. Now, as developing nations boost their economies, countries such as China, India, and Nigeria are seeing skyrocketing demand for these appliances.

Read 50 remaining paragraphs | Comments

Are TikTok algorithms changing how people talk about suicide?

Social media users have adopted terms like “unalive” to avoid platform censorship.

Are TikTok algorithms changing how people talk about suicide?

Enlarge (credit: Rafael Elias | Getty Images)

Kayla Williams has never said the word “suicide” on TikTok, even though she uses the platform to discuss mental health issues with her 80,000 followers. Since the beginning of the pandemic, the 26-year-old student from Berkshire, England, has posted multiple videos about suicidal ideation and her stay in a psychiatric ward. Some of these clips are lighthearted, others far more serious. Yet Williams does not utter the word “suicide” to her front-facing camera, or type it in her captions, for fear the TikTok algorithm will censor or remove her content. Instead, she uses the word “unalive.”

The hashtag #unalivemeplease has 9.2 million views on TikTok; #unaliving has 6.6 million; #unaliveawareness has an additional 2.2 million. Though #suicideprevention is a frequently used tag on the app, the hashtags #suicide and #suicideawareness do not exist—if you search for them, TikTok pulls up the number for a local crisis helpline. It’s a well-intentioned policy, initiated in September 2021, a year after a graphic video of a suicide spread across the app. But users have also come to fear elusive content moderation filters that seemingly suppress or remove videos discussing death, suicide, or self-harm.

While the word “unalive” first became popular in 2013 (when it was used in an episode of Ultimate Spider-Man), Google searches for the term have spiked dramatically in 2022. From TikTok, “unalive” has spread to Twitter and Reddit; YouTubers also use it so their content isn’t demonetized. Depending on the context, the word can refer to suicide, murder, or death. Though “unalive” is often used comedically on TikTok, people like Williams also use it to talk candidly, forge a community, and signpost resources on the app. The rapid rise of “unalive” therefore raises a worrying question: What happens when we don’t openly say “suicide”?

Read 14 remaining paragraphs | Comments

Hakim Bey: Ikone der Hackerkultur

Wie sieht die die Zukunft der Netzkultur aus? Das müssen wir uns nun ohne den Netzguru der ersten Stunde vorstellen

Wie sieht die die Zukunft der Netzkultur aus? Das müssen wir uns nun ohne den Netzguru der ersten Stunde vorstellen

Künstliche Intelligenz: Wie erklären Menschen die Entscheidungen von Computern?

Je komplexer eine KI, desto schwerer können Menschen ihre Entscheidungen nachvollziehen. Das ängstigt viele. Doch künstliche Intelligenz ist keine Blackbox mehr. Von Florian Voglauer (KI, Internet)

Je komplexer eine KI, desto schwerer können Menschen ihre Entscheidungen nachvollziehen. Das ängstigt viele. Doch künstliche Intelligenz ist keine Blackbox mehr. Von Florian Voglauer (KI, Internet)

Dunkle Wolken über Nordkorea

Das Corona-Virus breitet sich rasant aus, Fronten mit Südkorea sind verhärtet, die Nuklearfähigkeiten werden ausgebaut: Nukleare Proliferation in Asien befürchtet

Das Corona-Virus breitet sich rasant aus, Fronten mit Südkorea sind verhärtet, die Nuklearfähigkeiten werden ausgebaut: Nukleare Proliferation in Asien befürchtet

Donbass: Wo Russland Gelände gewinnt und Sympathien verliert

Im Donbass erzielen russische Truppen Fortschritte und wollen mit dem Regionalzentrum Sewerdonezk noch ukrainisch beherrschte Gebiete der Region Luhansk einschließen

Im Donbass erzielen russische Truppen Fortschritte und wollen mit dem Regionalzentrum Sewerdonezk noch ukrainisch beherrschte Gebiete der Region Luhansk einschließen

US college VPN credentials for sale on Russian crime forums, FBI says

Trafficked data could lead to subsequent attacks, agency warns.

US college VPN credentials for sale on Russian crime forums, FBI says

Enlarge (credit: Getty Images)

The FBI on Friday said that thousands of compromised credentials harvested from US college and university networks are circulating on online crime forums in Russia and elsewhere—and could lead to breaches that install ransomware or steal data.

“The FBI is informing academic partners of identified US college and university credentials advertised for sale on online criminal marketplaces and publicly accessible forums,” the agency said. “This exposure of sensitive credential and network access information, especially privileged user accounts, could lead to subsequent cyber attacks against individual users or affiliated organizations."

Login names and passwords are routinely harvested in phishing attacks, which may use fake claims of an account breach or a COVID-themed pitch to lure victims. Often, the threat actors who conduct these attacks sell the data on crime forums. The data can then be scooped up by fellow threat actors who focus on server infections for purposes of ransomware, cryptojacking, or espionage.

Read 3 remaining paragraphs | Comments