Contributor(s): Professor Alexander Bird, Dr Laura Fortunato, Professor Marcus Munafò

Contributor(s): Professor David Stevenson

Contributor(s): David Stevenson | David Stevenson discusses the key events of the year 1917, a turning point in the history of WWI and the evolution of the modern world. He explains how the war was transformed during that year, but also what kept it going and why it continued to escalate.

Contributor(s): Dr Judith Scheele

Contributor(s): John Van Reenen

Contributor(s): Muthoni Wanyeki

Contributor(s): Sophie Pedder

Contributor(s): Robin D G Kelley

Contributor(s): Professor Matthew Goodwin, Dr Sara Hagemann, Professor Sara B Hobolt

Contributor(s): Martin Tomkinson, Professor Mary Evans, Ted Parker, Guatam Appa