A circle running along the 27° east and 153° west meridians divides the globe into two halves with equal reflectivity – and this may have implications for solar geoengineering schemes ...

Hello, I’m Mr Firth, and together we’re going to learn about lines of symmetry. Symmetry is when one side of a shape looks exactly like the other—just flipped. Lots of buildings use symmetry because ...

Scientists have discovered a previously overlooked line of symmetry that splits the Earth into Eastern and Western hemispheres. Each of these hemispheres appears to reflect the same amount of sunlight ...