Author: The Conversation

Less than two years ago, the launch of ChatGPT started a generative AI frenzy. Some said the technology would trigger a fourth industrial revolution, completely reshaping the world as we know it. In March 2023, Goldman Sachs predicted 300 million jobs would be lost or degraded due to AI. A huge shift seemed to be underway. Eighteen months later, generative AI is not transforming business. Many projects using the technology are being cancelled, such as an attempt by McDonald’s to automate drive-through ordering which went viral on TikTok after producing comical failures. Government efforts to make systems to summarise public submissions and calculate welfare entitlements have met the same fate. So…

Robotic vehicles can optimize the flow of traffic in cities even when mixed in with vehicles driven by humans, thereby improving traffic efficiency, safety and energy consumption, my colleagues and I found. Robot vehicles are no longer a sci-fi concept: Cities around the world have been testing autonomous robotaxis since 2016. With the increasing presence of robot vehicles in traffic and the foreseeable long period of transitioning from mixed traffic to fully autonomous traffic, my team and I wondered whether robot vehicles and their interactions with human-driven vehicles can alleviate today’s notorious traffic problems. I am a computer scientist who studies artificial intelligence for transportation and…

Language enables people to transmit thoughts to each other because each person’s brain responds similarly to the meaning of words. In our newly published research, my colleagues and I developed a framework to model the brain activity of speakers as they engaged in face-to-face conversations. We recorded the electrical activity of two people’s brains as they engaged in unscripted conversations. Previous research has shown that when two people converse, their brain activity becomes coupled, or aligned, and that the degree of neural coupling is associated with a better understanding of the speaker’s message. A neural code refers to particular patterns of brain activity associated with…

A US judge has found that Google is a monopoly and has used this dominance to reinforce its market position. This ruling, which is subject to appeal, brings the US regulator close to the European Commission in its approach to tech giants such as Google, Meta, and Amazon. Regulators now agree that the nature of these companies’ business means that the market ends up becoming a monopoly dominated by one massive company. It has thus become the job of the state to protect consumers from tech giants consolidating their dominance. As a company, 80% of Alphabet’s (Google’s owner) revenue, comes from advertising, a total of US$146 billion (£114 billion) in 2021.…

A supermoon may sound exciting, but it’s a modest coincidence. As the Moon orbits Earth, its distance from us varies from 357,000 to 407,000 kilometres. When the Moon and the Sun are in almost opposite directions from Earth, we get a full moon. A “supermoon” is a full moon where its position along its orbit is within 10% of its closest approach to Earth. That’s it. This means a supermoon has an apparent diameter that’s 14% larger than the smallest possible full moon. That’s not a lot. You can’t really notice the difference by eye. As an astronomer, I have a problem…

Air quality has become one of the most important public health issues in Africa. Poor air quality kills more people globally every year than HIV, TB and malaria combined. And that’s just the tip of the iceberg. Air pollution makes people less productive because they get headaches and feel tired. India, for example, has poor air quality. The impact of India’s poor air quality on its gross domestic product is about US$100 billion every year. The health risks of poor air quality are known. But it’s always been costly to set up monitoring stations to measure it regularly. I am a particle physicist, and…

Humanoid robots have long been a staple of science fiction, but there is now real progress being made. A range of new models made by or backed by the likes of Boston Dynamics, Tesla and OpenAI are able to walk and move like humans, as well as perform feats of agility and dexterity. But it’s the ability to incorporate artificial intelligence (AI) into these humanoid robots that could truly allow them to make the leap into everyday life. AI-enabled “brains” could help dramatically improve the ways that humanoid robots interact with humans and the outside world. This would give humanoid robots their “iPhone moment”, meaning…

Launched in 2011, NASA’s NEOWISE mission operated in Earth’s orbit until late last week. It detected more than 3,000 near-Earth objects or NEOs – asteroids or comets whose orbits can bring them close to Earth, even with the possibility of a collision. NEOWISE was shut down on August 8. Surveying the population of NEOs is central to the emerging concept of planetary defence. That is, understanding and mitigating the risk of collision from asteroids large enough to do significant damage to Earth. NEOWISE has made fundamental contributions to establishing the knowledge base for planetary defence, with more than 200 of the 3,000 objects it studied…

Social networks have revolutionised the way we communicate, stay informed and share moments of our daily lives. We use platforms like Facebook, Twitter, Instagram and TikTok to keep in touch with our friends and family, share our experiences, keep informed, and express our opinions. But beyond these personal and often superficial uses, social networks play a much more complex and sometimes troubling role in society. The question arises: what impact do social networks have on societal security risk? How can these tools influence or even destabilise society? And how can individual users mitigate the risks? Societal security risks refer to…

New results from the first archaeological fieldwork conducted in space show the International Space Station is a rich cultural landscape where crew create their own “gravity” to replace Earth’s, and adapt module spaces to suit their needs. Archaeology is usually thought of as the study of the distant past, but it’s ideally suited for revealing how people adapt to long-duration spaceflight. In the SQuARE experiment described in our new paper in PLOS ONE, we re-imagined a standard archaeological method for use in space, and got astronauts to carry it out for us. Archaeology … in … spaaaaace! The International Space Station is…