EnvironmentNew book tells compelling tale of the fight to save the Siberian tiger The battle to save the magnificent but endangered Amur tiger detailed in Jonathan Slaght's Tigers Between Empires is an inspiring look at what collaboration across borders can achieve, finds Adam WeymouthCulture
LifeEvolution may explain why women live longer than men In most mammals, females live longer than males, but in birds the trend goes the other way – a study of over 1000 species points to possible reasons for these differences 51¶¯Âþ