What is behind the success of dark skies festival?

Iguazu Falls in South America hits record 10 times normal water flow – video

Iguazu Falls, an Unesco world heritage site, has reached a record water flow after heavy rains across the river basin. E…

The way we keep time with the sun will be changing forever after landmark vote

Since 1972, leap seconds have been added to clock time whenever our slightly wobbly Earth falls out of sync with atomic …

The eye condition that may signal dementia years before memory begins to fail

Researchers find retinopathy can’t simply coexist with cognitive decline but must precede it