diff --git a/02_data_science_defined.Rmd b/02_data_science_defined.Rmd
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--- a/02_data_science_defined.Rmd
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@@ -1,6 +1,5 @@
 # Data Science Defined {#datasciencedefined}
 
-
 ```{r echo = FALSE}
 library(knitr)
 opts_chunk$set(message = FALSE, warning = FALSE, cache = TRUE)
diff --git a/03_data_science_practice.Rmd b/_03_data_science_practice.Rmd
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diff --git a/10_data_sources.rmd b/_10_data_sources.rmd
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@@ -63,7 +63,7 @@ Design Space of Data Visualization"](https://www.sciencedirect.com/science/artic
 
 * Michael Correll (2018-11-20) [What Does “Visualization Literacy” Mean, Anyway?](https://medium.com/multiple-views-visualization-research-explained/what-does-visualization-literacy-mean-anyway-22f3b3badc0) 
 
----
+
 
 ## R Resources
 
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