05 Sci-Tech

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Scientists have developed a brain-computer interface that can capture and decode a person’s inner monologue.

The results could help people who are unable to speak communicate more easily with others. Unlike some previous systems, the new brain-computer interface does not require people to attempt to physically speak. Instead, they just have to think what they want to say.

“This is the first time we’ve managed to understand what brain activity looks like when you just think about speaking,” study co-author Erin Kunz, an electrical engineer at Stanford University, said in a statement. “For people with severe speech and motor impairments, [brain-computer interfaces] capable of decoding inner speech could help them communicate much more easily and more naturally.”

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Researchers have captured 3D images of the moment a human embryo implanted itself in a system that simulates the uterine environment, helping scientists build a better understanding of what happens during the implantation process.

It had previously not been possible to observe the implantation process in humans in real time, with traditional methods limited to still images taken at specific moments during the process.

In Australia, almost 109,000 in vitro fertilisation (IVF) cycles were performed in 2022, with the live birth rate per embryo transfer cycle increasing to 29.9% from 27.3% in 2018. The researchers hope that improving the understanding of the implantation process could have a significant impact on fertility rates and the time taken to conceive through assisted reproduction like IVF.

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Roughly two-thirds of all emissions of atmospheric methane — a highly potent greenhouse gas that is warming planet Earth — come from microbes that live in oxygen-free environments like wetlands, rice fields, landfills and the guts of cows.

Tracking atmospheric methane to its specific sources and quantifying their importance remains a challenge, however. Scientists are pretty good at tracing the sources of the main greenhouse gas, carbon dioxide, to focus on mitigating these emissions. But to trace methane’s origins, scientists often have to measure the isotopic composition of methane’s component atoms, carbon and hydrogen, to use as a fingerprint of various environmental sources.

A new paper by researchers at the University of California, Berkeley, reveals how the activity of one of the main microbial enzymes involved in producing methane affects this isotope composition.

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In 2023, NASA conducted a groundbreaking experiment to simulate life on Mars, confining four volunteers in a habitat replica for over a year. The mission, known as CHAPEA (Crew Health and Performance Exploration Analog), aimed to study how humans cope with extreme isolation, limited resources, and communication delays. While the scientific focus was on survival, adaptation, and psychological resilience, the crew discovered an unexpected ally: PS4 gaming. Beyond entertainment, video games helped the volunteers maintain cognitive sharpness, reduce stress, and improve problem-solving skills, offering insights for the future of long-duration space missions.