Targeted drug delivery directly to the liver has unlocked major breakthroughs across medicine, but constructing the chemical key to enter liver cells remains complex and costly. Researchers have now introduced a nature-inspired, mobile delivery platform utilizing polyrotaxanes—supramolecular thread-like polymers where ring-shaped cyclodextrin molecules can freely rotate and slide along a central axle chain, effectively bypassing traditional synthetic bottlenecks.

Ammonia is essential for fertilizers and is emerging as a zero‑carbon energy carrier, but its industrial production via the Haber‑Bosch process is energy‑intensive and emits large amounts of CO₂. Meanwhile, nitrate pollution from agriculture and industry has contaminated groundwater worldwide, threatening ecosystems and human health. Electrocatalytic nitrate reduction to ammonia (NO₃RR) offers an elegant solution: using renewable electricity to convert nitrate waste into valuable ammonia.

Astragalus polysaccharide reduces brain injury in mice and in human microbiota-transplanted models by restoring gut health, suppressing inflammation, and strengthening the intestinal barrier.

This critical review evaluates pharmaceutical pollution in soil‑air environments—where prevalent contaminants are antibiotics, analgesics, NSAIDs, antidepressants and anticancer agents—that threatens terrestrial and microbial communities, and highlights an urgent need for interdisciplinary research to protect ecosystem health.