diff --git a/src/atom.c b/src/atom.c
index a690bbf..66d7988 100644
--- a/src/atom.c
+++ b/src/atom.c
@@ -1,7 +1,7 @@
 /* atom.c
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/atom.h b/src/atom.h
index f076a7b..39014fc 100644
--- a/src/atom.h
+++ b/src/atom.h
@@ -1,7 +1,7 @@
 /* atom.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/ctrl.cpp b/src/ctrl.cpp
index fe090ea..07bbf32 100644
--- a/src/ctrl.cpp
+++ b/src/ctrl.cpp
@@ -2,7 +2,7 @@
  *
  * GUI control panel
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/ctrl.h b/src/ctrl.h
index 2561a7b..a63b84e 100644
--- a/src/ctrl.h
+++ b/src/ctrl.h
@@ -1,7 +1,7 @@
 /* ctrl.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/gui.cpp b/src/gui.cpp
index d731229..56eea93 100644
--- a/src/gui.cpp
+++ b/src/gui.cpp
@@ -2,7 +2,7 @@
  *
  * The main application GUI.
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
@@ -412,8 +412,8 @@ NernstGUI::about()
    QMessageBox::about( this, "About Nernst Potential Simulator",
       "<h3>About Nernst Potential Simulator</h3><br>"
       "<br>"
-      "Version 1.0.1b<br>"
-      "Copyright &copy; 2015  "
+      "Version 1.0.1c<br>"
+      "Copyright &copy; 2021  "
       "Jeffrey Gill, Barry Rountree, Kendrick Shaw, "
       "Catherine Kehl, Jocelyn Eckert, "
       "and Dr. Hillel J. Chiel.<br>"
@@ -424,8 +424,8 @@ NernstGUI::about()
       "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.<br>"
       "<br>"
       "Have a suggestion? Find a bug? Send us your comments "
-      "at <a href='mailto:autopoiesis@case.edu'>"
-      "autopoiesis@case.edu</a>." );
+      "at <a href='mailto:neuroinstructors@case.edu'>"
+      "neuroinstructors@case.edu</a>." );
 }
 
 
diff --git a/src/gui.h b/src/gui.h
index b6fdf13..92a2b93 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -1,7 +1,7 @@
 /* gui.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/main.cpp b/src/main.cpp
index 99e88b3..9775433 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,7 +1,7 @@
 /* main.cpp
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/options.c b/src/options.c
index 15e56ba..5a6dc50 100644
--- a/src/options.c
+++ b/src/options.c
@@ -1,7 +1,7 @@
 /* options.c
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
@@ -57,10 +57,10 @@ char
 *version[] =
 {
    "Nernst potential simulator.",
-   "(C) 2015  Jeffrey Gill, Barry Rountree, Kendrick Shaw, Catherine Kehl,",
+   "(C) 2021  Jeffrey Gill, Barry Rountree, Kendrick Shaw, Catherine Kehl,",
    "          Jocelyn Eckert, and Dr. Hillel J. Chiel",
    "",
-   "Version 1.0.1b",
+   "Version 1.0.1c",
    "Released under the GPL version 3 or any later version.",
    "This is free software; see the source for copying conditions. There is NO",
    "warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.",
diff --git a/src/options.h b/src/options.h
index de7c62f..ba28bf4 100644
--- a/src/options.h
+++ b/src/options.h
@@ -1,7 +1,7 @@
 /* options.h
  *
  * 
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/paint.cpp b/src/paint.cpp
index 1a090a8..a4d4786 100644
--- a/src/paint.cpp
+++ b/src/paint.cpp
@@ -2,7 +2,7 @@
  *
  * GUI visualization
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/paint.h b/src/paint.h
index ba7ea16..db0cadf 100644
--- a/src/paint.h
+++ b/src/paint.h
@@ -1,7 +1,7 @@
 /* paint.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/sim.cpp b/src/sim.cpp
index 86e1933..e451fa6 100644
--- a/src/sim.cpp
+++ b/src/sim.cpp
@@ -2,7 +2,7 @@
  *
  * The engine of the simulation without GUI support.
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/sim.h b/src/sim.h
index 0ffe51d..a231957 100644
--- a/src/sim.h
+++ b/src/sim.h
@@ -1,7 +1,7 @@
 /* sim.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/status.cpp b/src/status.cpp
index c18556c..197b4b0 100644
--- a/src/status.cpp
+++ b/src/status.cpp
@@ -2,7 +2,7 @@
  *
  * The GUI's status bar.
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/status.h b/src/status.h
index e056cb5..dcc75e3 100644
--- a/src/status.h
+++ b/src/status.h
@@ -1,7 +1,7 @@
 /* status.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/util.h b/src/util.h
index 5d39cad..e42e848 100644
--- a/src/util.h
+++ b/src/util.h
@@ -1,7 +1,7 @@
 /* util.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/world.c b/src/world.c
index f4b3896..4f7ea54 100644
--- a/src/world.c
+++ b/src/world.c
@@ -1,7 +1,7 @@
 /* world.c
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/world.h b/src/world.h
index 1f22775..1b77f06 100644
--- a/src/world.h
+++ b/src/world.h
@@ -1,7 +1,7 @@
 /* world.h
  * 
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/xsim.cpp b/src/xsim.cpp
index 033c45c..2a2b161 100644
--- a/src/xsim.cpp
+++ b/src/xsim.cpp
@@ -2,7 +2,7 @@
  *
  * The engine of the simulation with GUI support.
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.
diff --git a/src/xsim.h b/src/xsim.h
index 0dc7acb..fa2fb55 100644
--- a/src/xsim.h
+++ b/src/xsim.h
@@ -1,7 +1,7 @@
 /* xsim.h
  *
  *
- * Copyright (c) 2015, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
+ * Copyright (c) 2021, Jeffrey Gill, Barry Rountree, Kendrick Shaw, 
  *    Catherine Kehl, Jocelyn Eckert, and Dr. Hillel J. Chiel
  *
  * This file is part of Nernst Potential Simulator.