diff --git a/README.md b/README.md
index 76645802..a8d33e98 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ and even change the example programs. You’ll see that the code cells
 have no output at first, until you execute them by pressing
 {kbd}`Shift`\+{kbd}`Enter`. Complete details on how to interact with
 a live Jupyter notebook are described in [Getting Started with
-Jupyter](https://foundations.projectpythia.org/foundations/getting-started-jupyter.html).
+Jupyter](https://foundations.projectpythia.org/foundations/getting-started-jupyter).
 
 ### Running on Your Own Machine
 
diff --git a/notebooks/introduction.ipynb b/notebooks/introduction.ipynb
index 3507adc0..cbb58c6f 100644
--- a/notebooks/introduction.ipynb
+++ b/notebooks/introduction.ipynb
@@ -96,7 +96,7 @@
     "\n",
     "- [NOAA Cloud GIS Web Services](https://www.weather.gov/gis/cloudgiswebservices)\n",
     "- [USGS National Map Services](https://apps.nationalmap.gov/services/)\n",
-    "- [NASA EarthData Web Map Service](https://www.earthdata.nasa.gov/technology/web-map-service-wms)"
+    "- [NASA EarthData](https://www.earthdata.nasa.gov/)"
    ]
   }
  ],
diff --git a/notebooks/web_feature_services.ipynb b/notebooks/web_feature_services.ipynb
index f20f658f..983e4b6a 100644
--- a/notebooks/web_feature_services.ipynb
+++ b/notebooks/web_feature_services.ipynb
@@ -51,7 +51,7 @@
     "| [Intro to Geopandas](https://geopandas.org/) | Helpful | GIS files |\n",
     "| [Intro to Panel](https://panel.holoviz.org/) | Helpful | Dashboard creations |\n",
     "| [Intro to Requests](https://requests.readthedocs.io/en/latest/) | Helpful | Webpage requests |\n",
-    "| [Intro to Cartopy](https://foundations.projectpythia.org/core/cartopy/cartopy.html) | Helpful | Map projections |\n",
+    "| [Intro to Cartopy](https://foundations.projectpythia.org/core/cartopy/cartopy) | Helpful | Map projections |\n",
     "| [Intro to OWSLib](https://owslib.readthedocs.io/en/latest/usage.html) | Helpful | WFS URLs |\n",
     "\n",
     "- **Time to learn**: 10 minutes\n",
diff --git a/notebooks/web_map_services.ipynb b/notebooks/web_map_services.ipynb
index 5755c757..fd6ce721 100644
--- a/notebooks/web_map_services.ipynb
+++ b/notebooks/web_map_services.ipynb
@@ -58,7 +58,7 @@
     "| [Intro to GeoViews](https://geoviews.org/) | Helpful | Geographic visualizations |\n",
     "| [Intro to Panel](https://panel.holoviz.org/) | Helpful | Dashboard creations |\n",
     "| [Intro to Requests](https://requests.readthedocs.io/en/latest/) | Helpful | Webpage requests |\n",
-    "| [Intro to Cartopy](https://foundations.projectpythia.org/core/cartopy/cartopy.html) | Helpful | Map projections |\n",
+    "| [Intro to Cartopy](https://foundations.projectpythia.org/core/cartopy/cartopy) | Helpful | Map projections |\n",
     "| [Intro to OWSLib](https://owslib.readthedocs.io/en/latest/usage.html) | Helpful | WMS URLs |\n",
     "\n",
     "- **Time to learn**: 15 minutes\n",