Longer essays and features from Science Blog. Pieces here go through additional research and review.
Outdoor morning light can strongly shift circadian timing, but human studies do not establish five minutes as a universal threshold, and visible clock-setting light still passes through glass.
Aug 16, 2026
In 1,572 older U.S. adults, purpose tracked four health-oriented methylation clocks but not nine chronological-age clocks. The cross-sectional result cannot establish cause.
Aug 16, 2026
Diary studies and conflict-reasoning experiments suggest that older adults often argue less, react less strongly to avoidable tensions and use more perspective and compromise.
Aug 16, 2026
In six anonymous public-goods rounds, cooperative choices affected later contributions through chains of randomly reassigned strangers, reaching three experimental links.
Aug 15, 2026
Dogs can approach parts-per-trillion sensitivity for some odorants, and controlled studies show they can distinguish cancer-associated patterns in collected breath.
Aug 15, 2026
SpaceX's Mars architecture and hardware have changed dramatically since 2016, but its earliest landing date has repeatedly moved to the next transfer window.
Aug 15, 2026
A 2025 PNAS study identified 46 vertebrate taxa in a northern Norwegian cave deposit, revealing a coastal Arctic community from roughly 85,000 to 71,000 years ago.
Aug 15, 2026
The 80-reactor comparison is mathematically sound for 300 MW units, but the measured baseline, capacity factor, reactor size and 2030 forecast change what the number means.
Aug 15, 2026
A newborn kangaroo's body is unfinished in almost every visible way, yet its forelimbs and sensory circuits are precisely prepared for the three-minute climb to the pouch.
Aug 15, 2026
