Solve the math puzzle from our October 2026 issue, in which a bird watcher seeks an indoor hobby.
Solve the math puzzle from our October 2026 issue, in which a bird watcher seeks an indoor hobby.
What’s behind ‘one of paleontology’s most enduring enigmas’? 
Big space mirrors could bring Earth on-demand light — and upend our night sky 
Nepal’s deadly debris flow points to risks in other high mountain regions 
During menopause, brain changes surprisingly take a break 
When AI goes rogue, its human overseers may be to blame 
These mice have human (nerve cells) on the brain 
Math puzzle: Shape-birding 
The Cost of Excluding Refugees 
WHO Launches New Global Health Strategy for Childhood Cancer Medications