Author: The Conversation

How do you choose your next travel destination? Social media platforms like Instagram and TikTok are handy tools for holiday research, full of #inspo for new and beautiful places to go. However, behind those mesmerising selfies, highlights and reels, there’s often a stark reality that isn’t shared. Our ongoing research shows that dangers abound from social media related misadventures. These include the hidden dangers of getting to the location, as well as the ecological strains on sites that get overcrowded with tourists. Australia, with its breathtaking natural wonders, is no stranger to the downsides of social media tourism. Many people have been…

Social media platforms have been implicated in conflicts of all scales, from urban gun violence to the storming of the US Capitol building on January 6 and civil war in South Sudan. Scientifically, it is difficult to tell how much social media can be blamed for one-off incidents. But in much the way that climate change increases the risk of extreme weather, evidence suggests that current algorithms (which mostly optimise for engagement) raise the political “temperature” by disproportionately surfacing inflammatory content. This may make people angrier, increasing the risk that social differences escalate to violence. But what if we redesigned social media to bridge divides? “Bridging-based ranking” is an alternative…

Where is the text you’re reading, right now? In one sense, it lives “on the internet” or “in the cloud”, just like your favourite social media platform or the TV show you might stream tonight. But in a physical sense, it’s stored and transmitted somewhere in a network of thousands of data centres across the globe. Each of these centres is whirring, buzzing and beeping around the clock, to store, process and communicate vast amounts of data and provide services to hungry consumers. All this infrastructure is expensive to build and run, and has a considerable environmental impact. In search of cost savings,…

Discussions around science and technology can become controversial, such as public conversations around climate science or gene-editing tools. That might leave the impression that such conversations are best avoided. But it is important to have constructive conversations about scientific and technical subjects because of how they impact our lives. Not having these conversations can lead to further division and strained relationships. Avoidance of such conversations could also have serious implications for scientific research support such as the continued development of life-saving vaccines or in deciding how we might regulate emerging technologies such as generative artificial intelligence. The ancient Greeks had a term for…

In the 2018 documentary “The Cleaners,” a young man in Manila, Philippines, explains his work as a content moderator: “We see the pictures on the screen. You then go through the pictures and delete those that don’t meet the guidelines. The daily quota of pictures is 25,000.” As he speaks, his mouse clicks, deleting offending images while allowing others to remain online. The man in Manila is one of thousands of content moderators hired as contractors by social media platforms – 10,000 at Google alone. Content moderation on an industrial scale like this is part of the everyday experience for users…

As armed conflict continues to play out in the Israel–Gaza war, a separate battle is raging to control the narrative being presented to the world. Eyewitness accounts, verified facts and culturally sensitive reporting are competing with misinformation, political propaganda and irresponsible journalism. This information warfare has real-world consequences. Pro-Palestinian and pro-Israeli protests organised through social media have drawn tens of thousands of people onto the streets, despite anti-protest measures adopted in some countries. The horrific events of the war, along with responses from across the world, underscore the dangers of diplomatic inaction. It also raises questions about the role digital activism plays in shaping the power dynamics that govern…

Our Sun is a steady and everlasting companion. Reliable like a clock, its apparent passage across the sky allows us to measure time. The Sun and its path is also the source of Earth’s seasons. But in many respects, our Sun is far from calm and unchanging. Close up, the Sun shows extensive variation and activity. Bright explosions called flares regularly cause huge outbreaks of radiation. Darker, cooler areas called sunspots emerge, move, change shape and vanish. The Sun also releases material into space in powerful eruptions, called solar particle events. This solar activity varies with time. It peaks every 11 years – and the next…

Only “persons” can engage with the legal system – for example, by signing contracts or filing lawsuits. There are two main categories of persons: humans, termed “natural persons,” and creations of the law, termed “artificial persons.” These include corporations, nonprofit organizations and limited liability companies (LLCs). Up to now, artificial persons have served the purpose of helping humans achieve certain goals. For example, people can pool assets in a corporation and limit their liability vis-à-vis customers or other persons who interact with the corporation. But a new type of artificial person is poised to enter the scene – artificial intelligence systems, and they…

Google, Microsoft and others boast that generative artificial intelligence tools like ChatGPT will make searching the internet better than ever for users. For example, rather than having to wade through a sea of URLs, users will be able to just get an answer combed from the entire internet. There are also some concerns with the rise of AI-fueled search engines, such as the opacity over where information comes from, the potential for “hallucinated” answers and copyright issues. But one other consequence is that I believe it may destroy the US$68 billion search engine optimization industry that companies like Google helped create. For the past 25…

There are rules in war. International humanitarian law regulates what combatants can and can’t do, with the goal of protecting civilians and limiting suffering. Most of these laws were developed during the 19th and 20th centuries. But in our own century a new kind of battlefield has emerged: the domain of cyberattacks, digital campaigns and online information operations. All these have played a heightened role in Russia’s war in Ukraine and, increasingly, in the current Israel–Hamas conflict. There is a persistent myth that cyberspace is a lawless wild west. This could not be further from the truth. There is a…