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This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW

July 11, 2025
in General, People
This week in science: a comet, plastic-eating bugs, and how altitude changes smell – KUOW
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This week in science brings a fascinating trio of discoveries and phenomena capturing the world’s attention. From a dazzling comet streaking across our skies to groundbreaking research on plastic-eating insects offering new hope for pollution, and a surprising study revealing how changes in altitude can alter our sense of smell-these stories highlight the diverse and dynamic nature of scientific exploration. Here’s a closer look at the latest developments reported by KUOW.

This Week’s Cosmic Spotlight Comet Sheds New Light on Solar System Origins

Recently, astronomers have directed their gaze toward a comet that is rewriting the narrative of our solar system’s early days. Analysis reveals that this icy traveler, first observed months ago, carries materials unaltered since the solar system’s formation over 4.5 billion years ago. Spectroscopic studies have uncovered complex organic compounds, hinting at the primordial chemistry that may have seeded life on Earth. This discovery offers a rare glimpse into the building blocks that shaped planetary bodies and potentially fostered biological precursors.

Among the key findings are the comet’s unexpected distribution of volatile elements, challenging previous models of early solar system dynamics. The research team compiled data showcasing the comet’s composition:

Element Abundance (%) Significance
Water Ice 65 Supports organic molecule formation
Carbon compounds 20 Indicators of early organic chemistry
Silicates 10 Primordial building blocks
Other Volatiles 5 Imply dynamic solar processes

Advancements in telescopic imaging have allowed scientists to capture unprecedented detail, while sample-return missions are in planning stages to bring physical samples back for analysis. These efforts promise to deepen our understanding of cosmic origins and the conditions that may have fostered the emergence of life itself.

Plastic-Eating Bugs Offer Promising Solutions for Global Waste Crisis Experts Weigh In on Biodegradation Potential

In a groundbreaking development, scientists have identified several species of insects capable of breaking down common plastics at an accelerated rate. These “plastic-eating bugs” have demonstrated an ability to degrade polyethylene and polystyrene, two of the most persistent plastics clogging landfills and oceans worldwide. Researchers emphasize the significance of enzymes produced by larvae and bacteria within their digestive systems, which initiate the breakdown of long polymer chains into simpler compounds. This discovery opens new avenues in sustainable waste management, signaling a potential shift from traditional recycling to biological degradation methods.

Experts caution, however, that current applications remain in early stages and underscore the need for further research, especially regarding large-scale deployment. Key challenges include:

  • Scaling the biodegradation process without ecological disruption
  • Understanding the long-term impacts of byproducts produced
  • Integrating biotechnological solutions with existing waste infrastructure

A recent comparative analysis highlights how various insect species fare in plastic degradation rates:

Species Plastic Type Degradation Rate
Mealworm Larvae Polystyrene Up to 50 mg/day
Superworm Polyethylene Approx. 40 mg/day
Wax Moth Larvae Polyethylene Moderate, ongoing studies

How Altitude Alters Our Sense of Smell Implications for Pilots and High-Altitude Travelers

As altitude increases, the way our olfactory system processes scents undergoes significant changes, a fact that could have important consequences for pilots and travelers venturing into higher elevations. Research shows that reduced air pressure and lower oxygen levels at altitude can dull the sensitivity of smell receptors, making it more difficult to detect odors. This diminished sense poses unexpected risks, especially in aviation, where the ability to notice certain smells-like smoke or fuel leaks-can serve as an early warning system.

Beyond safety concerns, this shift in olfaction affects the overall sensory experience for high-altitude travelers. Food and beverage flavors are closely tied to smell, so diminished scent perception can lead to reduced appetite and altered taste, sometimes contributing to altitude sickness or discomfort. Below is a snapshot of how altitude correlates with changes in smell perception:

Altitude Olfactory Sensitivity Implications
Sea Level (0-500 m) Normal Full scent detection; normal safety and taste experience
Moderate (1500-2500 m) Reduced Decreased scent accuracy; slight impact on safety vigilance and appetite
High (3500-5000 m) Significantly Reduced Compromised scent detection; higher safety risks, notable taste changes
  • Pilots may need enhanced olfactory training or alternative detection systems at altitude.
  • High-altitude hikers could prepare for altered sensory experiences affecting nutrition and comfort.
  • Aircraft cabin design might benefit from improved air filtration and warning mechanisms that don’t rely on smell.

The Way Forward

As this week’s scientific discoveries show, from the cosmic journey of a newly tracked comet to innovative ways insects may help tackle plastic pollution, and the surprising ways altitude can alter our sense of smell, science continues to reveal the unexpected facets of our world and beyond. Stay tuned to KUOW for more updates as researchers push the boundaries of knowledge and offer fresh insights into the challenges and wonders that shape our lives.

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