Advances

Find the lengths of the sides of the square in this math puzzle

Controlling a small group of “noisy” sheep holds hints for computer algorithms

Dogs spontaneously aid struggling humans the way young children do—whereas cats wait until they stand to benefit

These eye-catching insects offer a prime opportunity for scientists to dig deep into invasion ecology and evolutionary biology

Like astronauts’ “overview effect,” a dramatic feeling of awe takes hold on extended seafloor stays

AI analysis of mammograms could provide a “bonus finding” for heart disease

Culture is humanity’s secret for world domination. This calculation shows just how powerful it is

Fix the matchstick equation in this math puzzle

A newfound nocturnal navigation system challenges what entomologists thought they knew about how ants find their way

The “coastline paradox” helped to define fractals, but coastlines themselves turn out to be less fractal than thought

Some of Earth’s tiniest life-forms inhabit slowly sinking particles of fish poop and debris, playing a crucial role in ocean carbon storage

Research suggests depression assessment questionnaires can’t reliably compare people with differing intelligence