This plant has the most stunning purple flowers that form ... There are also some varieties that have blue or white flowers. It's common for monarch butterflies to be drawn to these lovely blooms ...

blue or green. Birds and insects are only able to display purple through structural colouration. This is where tiny structures in the feathers of birds or the scales of butterflies and beetles are ...

After Hurricane Andrew ripped through South Florida in 1992, the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up ...