iNaturalist:
Sugar maple spotting slows as Canada's fall color fades
iNaturalist:
Red oak spotting slows down as fall colors fade
iNaturalist:
This fuzzy forest moss is suddenly everywhere in Canada
iNaturalist:
Milkweed sightings stay high across Canada as autumn sets in
iNaturalist:
Invasive buckthorn sightings surge across Canada this week
iNaturalist:
Pokeweed sightings dip slightly as fall observation seaso...
iNaturalist:
This weedy wetland plant is everywhere on iNaturalist this week
iNaturalist:
Eastern redcedar is having a moment on iNaturalist this week
iNaturalist:
Sugar maple spotting slows as Canada's fall color fades
iNaturalist:
Red oak spotting slows down as fall colors fade
iNaturalist:
This fuzzy forest moss is suddenly everywhere in Canada
iNaturalist:
Milkweed sightings stay high across Canada as autumn sets in
Teen marijuana use lowers grades and raises addiction risk in one-in-six users
PubMed · 2026-01-18
A national survey analysis found that 11.4% of U.S. adolescents aged 12-17 use cannabis, with higher use tied to more school absences and lower grades. Adolescents are disproportionately vulnerable to addiction: 1 in 6 teens who try marijuana develop a use disorder, compared to 1 in 10 across all age groups.
1
Pooled cannabis use prevalence among adolescents aged 12-17 is 11.4% (95% CI: 10.70-12.20%)
2
1 in 6 adolescents who try marijuana develop a use disorder, compared to 1 in 10 across all ages
3
Higher cannabis use correlated with increased school absences and lower academic grades; use was slightly more prevalent among females and white, Hispanic, and Black adolescents
