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

EVERY four years, each Olympic flame starts its life in a parabolic mirror in Greece, lit by reflection of the sun.
The curved sides of the mirror reflect light to the same point, intensifying the light so brightly that it can cause the torch to catch alight.
The same phenomenon was responsible when the concave face of a London skyscraper, nicknamed the “Walkie-Talkie,” concentrated the sun’s heat onto a luxury car parked below, melting parts of its metal and glass exterior.

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