There have been penalties for those who looked the other way when Epstein was convicted of child sex offences and decided to maintain relationships with the financier — but not for the British ambassador to Washington, reveals SOLOMON HUGHES

CORALS are symbiotic, meaning they depend on a relationship with another biological organism. Microbes called zooxanthellae live inside the structures corals build out of calcium carbonate.
The microbes photosynthesise, providing corals with energy and nutrients. They also give corals their characteristic vivid colours. However, when corals are placed under stress, they will expel their resident zooxanthellae, turning the coral white.
By far the most serious cause of this stress-related bleaching is warming water. Corals have a typical temperature range they are happy with, and when water temperatures exceed that — particularly for long periods — they bleach.
The bleaching is not merely an aesthetic concern: the expulsion of the zooxanthellae means the corals have lost their main source of food. They may not initially die but they are vulnerable, susceptible to disease and starvation. Longer periods of bleaching and they will die.
When the water temperature becomes too hot, a colourful reef can be transformed into a graveyard. The tropical paradise disappears; as corals die and turn white, a brown algal sludge spreads.

What’s behind the stubborn gender gap in Stem disciplines ask ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT in their column Science and Society

While politicians condemned fascist bombing of Spanish civilians in 1937, they ignored identical RAF tactics across the colonies. Today’s aerial warfare continues this pattern of applying different moral standards based on geography and race, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

The distinction between domestic and military drones is more theoretical than practical, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT

Nature's self-reconstruction is both intriguing and beneficial and as such merits human protection, write ROX MIDDLETON, LIAM SHAW and MIRIAM GAUNTLETT