19 Aug 2014: Athene Donald: Structural colours are more visible and vivid than those that use pigments – as many examples from the natural world demonstrate. But sometimes pure white is what is required
13 Aug 2014: Country diary: Lower Ouseburn valley, Newcastle: Traffic growled overhead, but here was a fragile insect of exquisite beauty, in what was once one of the most polluted parts of the city
10 Aug 2014: Originally published in the Guardian on 13 August 1964: At the end of May, red admiral butterflies arrived in Norfolk as migrants from the South
10 Aug 2014: Stephen Moss: Bee-eaters, stilts and rare butterflies have appeared in the UK for the first time in years, tempted by the unusually hot summer sunshine
1 Aug 2014: Country diary: Frohawk Ride, New Forest: The butterfly sighting was a splendid way to celebrate Frohawk’s birthday, though it’s sad the insect has declined here
We look back at Apple's tech products, including game-changers such as the iMac and iPhone, curiosities like Lisa – and duds, like the 20th Anniversary Macintosh