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@@ -92,6 +92,9 @@ Feel free to edit this page and add your own presentations below:
   (http://slides.com/rasendrankirushan/project-experience-itp-2013) by Rasendran Kirushan
 * [Event Store JVM client](http://t3hnar.github.io/eventstore-jvm-client-slides) by [Yaroslav Klymko](https://github.com/t3hnar)
 * [Introduction to MQTT protocol](http://amorenoc.github.io/mqtt-slides) by Alexandre Moreno
-* 2 Data Visualization Presentations [Visualising 2000 Years of Declining World Poverty](http://ourworldindata.org/roser/presentation/June2014OnlinePresentation/DecliningPovertyIncreasingProsperityAndDecreasingWorldIncomeInequality.html#/title-slide) and [A Short Visual History of Global Health
-](http://ourworldindata.org/roser/presentation/online/ImprovingHealthAroundTheWorld/ImprovingHealthAroundTheWorld.html#/title-slide) by [@MaxCRoser](https://twitter.com/MaxCRoser)
-  
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+* 4 Data-Visualization Presentations by [@MaxCRoser](https://twitter.com/MaxCRoser): 
+ * [Visualising 2000 Years of Declining World Poverty](http://ourworldindata.org/roser/presentation/June2014OnlinePresentation/DecliningPovertyIncreasingProsperityAndDecreasingWorldIncomeInequality.html#/title-slide)
+ * [A Short Visual History of Global Health
+](http://ourworldindata.org/roser/presentation/online/ImprovingHealthAroundTheWorld/ImprovingHealthAroundTheWorld.html#/title-slide) 
+ * [The Visual History of the Rise of Political Freedom and Decrease in Violence](http://ourworldindata.org/roser/presentation/online/RiseOfPoliticalFreedomAndTheDecreaseOfViolence/RiseOfPoliticalFreedomAndTheDecreaseOfViolence.html#/title-slide)
+ * [The Visual History of Decreasing World Hunger and Improving Food Provision](http://ourworldindata.org/roser/presentation/online/DecreasingWorldHungerandImprovingFoodProvision/DecreasingWorldHungerandImprovingFoodProvision.html#/title-slide)
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