diff --git a/data-science-for-esm/07-workshop-networkx.ipynb b/data-science-for-esm/07-workshop-networkx.ipynb
index 5c90ad38..6380b649 100644
--- a/data-science-for-esm/07-workshop-networkx.ipynb
+++ b/data-science-for-esm/07-workshop-networkx.ipynb
@@ -545,7 +545,7 @@
     "import matplotlib.pyplot as plt\n",
     "\n",
     "fig, ax = plt.subplots(figsize=(5, 5))\n",
-    "nx.draw(G, with_labels=True, ax=ax, node_color=\"red\", font_weight=\"bold\")\n",
+    "nx.draw(G, with_labels=True, ax=ax, node_color=\"green\", font_weight=\"bold\")\n",
     "plt.savefig(\"tmp.png\")"
    ]
   },
@@ -661,7 +661,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "A = nx.adjacency_matrix(G, weight=None).todense()"
+    "A = nx.adjacency_matrix(G, weight=None).todense()\n",
+    "A"
    ]
   },
   {
@@ -677,8 +678,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "K = nx.incidence_matrix(G, oriented=True).todense()\n",
-    "K"
+    "nx.incidence_matrix(G, oriented=True).todense()"
    ]
   },
   {
@@ -845,6 +845,15 @@
     "edges.head(5)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "edges"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -874,7 +883,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "print(G)"
+    "print(N)"
    ]
   },
   {
diff --git a/data-science-for-esm/10-workshop-pypsa-cem.ipynb b/data-science-for-esm/10-workshop-pypsa-cem.ipynb
index e44b92ca..9a4211d6 100644
--- a/data-science-for-esm/10-workshop-pypsa-cem.ipynb
+++ b/data-science-for-esm/10-workshop-pypsa-cem.ipynb
@@ -1055,6 +1055,15 @@
     "system_cost(n).sum() * 1e6 / demand.sum()"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "n.export_to_netcdf(\"network-new.nc\")"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
diff --git a/data-science-for-esm/11-workshop-groupwork.ipynb b/data-science-for-esm/11-workshop-groupwork.ipynb
index 86eff1a3..b9bed2c0 100644
--- a/data-science-for-esm/11-workshop-groupwork.ipynb
+++ b/data-science-for-esm/11-workshop-groupwork.ipynb
@@ -963,7 +963,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.0"
+   "version": "3.11.4"
   }
  },
  "nbformat": 4,