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Science News for November 4, 2026


Testing Einstein's laws from the bottom of the Mediterranean Sea

Researchers from the KM3NeT collaboration analysed 5,828 atmospheric neutrino events to test for violations of Lorentz invariance, finding no evidence but setting new limits on possible effects. The results are promising for future studies of neutrino oscillations and potential discrete spacetime.

SourceSissa Medialab·JournalJournal of Cosmology and Astroparticle Physics·TypeData/statistical analysis·DateNov 4, 2026

Cannabis involved in most substance-related emergency visits among teens, young adults

A national study found that cannabis was involved in the majority of substance-related emergency visits among adolescents and young adults, while alcohol predominated among older adults. The study highlights the need for better awareness of changing patterns of harm from these substances, particularly among young people.

SourceWashU Medicine·JournalAmerican Journal of Psychiatry·TypeObservational study·DateNov 4, 2026

I look up as I walk, my healthcare costs look down

A new study by Osaka Metropolitan University reveals that walking boosts healthcare costs but at a specific step count threshold of around 11,000 steps per day. The study found that the relationship between physical activity and healthcare costs is age-dependent, with older adults being more sensitive to daily steps.

SourceOsaka Metropolitan University·JournalSSM - Population Health·TypeData/statistical analysis·DateNov 4, 2026