The Armenian portraitist from Syria emigrated to Canada in 1923. His snapshot of the British PM made him a household name, and he went on to photograph some of the world's most famous figures.

The images in this year's exhibition belie the air of reliable permanence. They show that the world is changing and at an alarming pace.

An exhibition at London's Tate Modern has some big-name artists working in paint and photography. It plots the artistic cohesion between both mediums but relies heavily on one source for exhibits.

I knew something was wrong the minute I woke up. OnSeptember 9, the sky was still dark at7:15 a.m.Eventually it revealed a deep-orange light, darker and dustier than any sunset. After a dry lightning…