This week on Heliox, we trace the science from a rigorous long COVID symptom meta-analysis, through the structural biology of the “turtle” variant, to why a proven diagnostic test still isn’t in your local lab — and why clean air might be the fastest fix we actually have.
Podcast Episode · Heliox: Where Evidence Meets Empathy 🇨🇦 · September 2 · 17m.
If you were in a classroom in the early 1990s, there is a real chance you planted a piece of space history without even realizing it. NASA sent Rutgers tomato seeds into space for nearly six years and then gave them to 3.3 million students across the country, according to NASA’s Technical Reports Server. Years before people started talking about growing food on Mars, this quiet classroom project was already testing whether seeds could survive years of space radiation and still grow.
Why NASA left seeds in orbit for six years
The seeds were never meant to stay in space that long. The project, called the Space Exposed Experiment Developed for Students, or SEEDS, was a collaboration between NASA Headquarters, NASA’s Langley Research Center, and the George W. Park Seed Company. Rutgers tomato seeds were loaded onto the Long Duration Exposure Facility, a satellite designed to see how materials and biological samples perform over periods in orbit. The Challenger disaster in January 1986 changed the timeline, grounding the shuttle program for about 32 months until it returned to flight in September 1988. The satellite stayed in space far longer than expected. When it finally returned to Earth in January 1990, the tomato seeds had been in orbit for nearly six years. They had been exposed to radiation and solar wind the entire time.
P2RX7 may be linked to severe suicidal thoughts and recovery, but researchers still need to confirm the pattern in living people.
Severe suicidal thoughts may leave a detectable biological signal in the brain, and that signal could also change when people recover. Researchers at the Netherlands Institute for Neuroscience have identified a receptor that may be linked to these shifts, providing a possible new direction for studying resilience and suicide prevention.
In the Netherlands, nearly five people die by suicide each day, and there may be about twenty suicide attempts for every death. Despite the enormous consequences for individuals and families, scientists still understand relatively little about the biological processes associated with suicidal thoughts. Effective medications specifically targeting suicidal thoughts are also urgently needed.
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Some of nature’s most important chemical reactions rely on the coupled movement of negatively and positively charged particles. These processes play central roles in photosynthesis, catalysis and biological energy conversion yet remain difficult to observe.
Now, a research team led by the Department of Energy’s Pacific Northwest National Laboratory, in collaboration with colleagues at SLAC National Accelerator Laboratory and several academic labs, has captured snapshots of these events triggered when light strikes a molecule.
The findings, published in Nature Communications, could help researchers better understand and ultimately design better flow batteries, fuel cells and catalysts.
What do “epigenetic clocks” actually measure? These lab tests have become popular tools for studying biological aging, or how the body’s cellular function changes at a faster or slower rate than expected. However, the underlying biology behind each of these measurements has remained largely unknown until now.
When an athlete swings upside down atop a 7-meter (23-foot) pendulum, it may seem like a feat of strength, courage or technique. A new study suggests it is something more fundamental: a striking demonstration of how intelligence emerges from the interaction of brain, body and environment.
In a paper published in the Journal of Nonlinear Science, Harvard researchers use mathematics, physics and control theory to analyze kiiking, an extreme sport invented in Estonia in which athletes pump a giant swing until they complete a full rotation.
At one level, the problem appears straightforward. The athlete repeatedly stands and squats to inject energy into the swing. Yet this simple action inspires a question that reaches far beyond sport, touching neuroscience, robotics, biology and human performance: How does an organism learn to exploit the dynamics of its environment to achieve a goal?
An AI assistant helped University of Colorado Boulder researchers solve a mathematical problem that had challenged their lab for a year and a half, though it made subtle errors along the way. The breakthrough could improve how scientists study nanoparticles—tiny particles about 1,000 times thinner than a human hair—but it reveals both the promise and limitations of AI as a scientific research partner.
The new study, published in the Journal of Fluid Mechanics, details the solution to a decades-old fluid mechanics problem and explains how researchers combined AI with human expertise to reach the answer.
The research was led by Ankur Gupta, an assistant professor of chemical and biological engineering, and his graduate student, Arkava Ganguly, who spent a year and a half working on the problem. With help from Anthropic’s Claude AI, they discovered that changing a nanoparticle’s shape, such as by stretching it from a circle to a football shape, changes how fast it moves in an electric field, while adding finer features, such as bumps or ripples, does not.