Engels Today marks the centenary of Frederick Engels death through a collection of papers engaging with the thought of Marx's only close collaborator, who was influential in his own right, as well as in his attempted popularisation of 'Marxism'. Specialists in different disciplines here address what is still alive in Engels' contributions to them; they discuss matters that remain influential, or controversial, in the works of this great socialist and thinker, relating to Nature, Science, Women, Revolution, Democracy, Economics, Materialism and Class.