PFAS that linger, antibiotics that inflame, and screens that reshape reading

The Point by Modern Sciences - September 2, 2026

Author

Don Smith
September 02, 2026

By The Modern Sciences Team

September 2, 2026

Welcome to September, Cultivators of Curiosity!

Issue 34 of The Point by Modern Sciences follows three scientific surprises that become clearer once we look beyond the obvious headline.

PFAS pollution from old tanker fires remained hidden in Australian waterways for decades, showing why environmental monitoring cannot stop when an emergency ends. Antibiotics still save lives, but laboratory research suggests some treatments may prompt bacteria to release particles that intensify inflammation. And the debate over books versus screens turns out to be less about technology alone than about distraction, formatting, and the developing mechanics of attention. Together, these pieces ask a useful question: what happens after the first effect, when chemicals persist, bacteria respond, or a screen quietly changes the way we read?

MATH AND THE SCIENCES

We proved these ‘forever chemicals’ can last longer than three decades

PFAS contamination can remain hidden in drinking-water catchments for decades, according to research tracing pollution from two petrol tanker fires in Australia. The study found that firefighting foam likely allowed toxic PFOS to persist in waterways long after the accidents, with one contamination plume eventually reaching levels hundreds of times above safety guidelines. The findings expose a monitoring problem that is difficult to ignore.

The Point:

  • PFAS pollution can outlast the event that caused it: Two tanker fires separated by eight years produced contamination that remained hidden for 24 and 33 years, respectively. Because PFAS chemicals resist breakdown and can move through soil and water, a short-lived emergency can create a persistent threat to drinking-water supplies.

  • The Blue Mountains contamination was far beyond safe levels: Researchers found between 2,000 and 2,400 nanograms of PFOS per litre in contaminated creek water, compared with an Australian drinking-water guideline of less than 8 nanograms. The pollution also exceeded freshwater ecosystem guidelines by roughly 100 times, threatening both public health and wildlife.

  • Monitoring gaps allowed the problem to remain invisible: The firefighting foam used during the crashes was a likely source, but limited historical testing made it difficult to establish exactly when contamination began. The findings show why water catchments need long-term PFAS surveillance, even after a single incident appears to be resolved.

MATH AND THE SCIENCES

Antibiotics can trigger bacteria to release bubbles of inflammation tinder, making it harder to treat infection

Some antibiotics may make severe infections more inflammatory by causing bacteria to release greater quantities of microscopic particles called bacterial extracellular vesicles. These bubbles can carry toxins and immune-signaling molecules into the body, potentially worsening the response that contributes to sepsis. Laboratory experiments with E. coli found that cell-wall-targeting antibiotics produced more vesicles than drugs affecting protein production or DNA replication, raising important questions about treatment choices.

The Point:

  • Bacteria respond actively when antibiotics attack them: Experiments with E. coli showed that drugs aimed at the cell wall triggered more bacterial extracellular vesicle production than antibiotics interfering with protein production or DNA replication. The result suggests that the way bacteria are damaged can influence the inflammatory material they release.

  • The released vesicles can intensify immune reactions: These microscopic structures carry toxins and other molecular signals that can interact with blood-vessel cells and activate the immune system. During a severe infection, that extra stimulation could contribute to the uncontrolled inflammation and tissue damage associated with sepsis.

  • The finding changes the questions researchers ask about treatment: Antibiotics remain essential and lifesaving, and the research does not justify avoiding them. It does suggest that future treatment strategies may need to consider not only how efficiently a drug kills bacteria, but also how bacterial debris affects the patient’s immune response.

MATH AND THE SCIENCES

Do we absorb information better on paper, rather than screens? It depends on the screen

Digital reading is not automatically worse than reading books, but devices that introduce distractions or encourage skimming may reduce comprehension, especially among children still developing reading skills. Research on eye movements shows that skilled reading requires precisely coordinated visual and mental processes, making pop-up ads, poor formatting, and information-search habits more than minor inconveniences. The real issue may be how a screen shapes attention.

The Point:

  • Reading depends on tightly coordinated brain systems: The eyes move through text in rapid saccades and brief fixations, while the brain identifies words and connects them to language and meaning. Because each step takes time and attention, anything that interrupts the sequence can make comprehension harder.

  • The format matters more than the label digital: E-readers and books can both support the mental processes required for skilled reading when the text is stable and clearly presented. Webpages filled with advertisements, unrelated images, uneven spacing, or pop-ups place extra demands on attention that paper usually does not.

  • Children have less protection from digital distraction: Adults often develop enough executive control to ignore competing signals, but young readers are still learning to coordinate attention and comprehension. Digital platforms that promote skimming may therefore be particularly damaging for children who need sustained practice to build strong reading skills.