diff --git a/agent.py b/agent.py
index 8cfada3..4a04919 100644
--- a/agent.py
+++ b/agent.py
@@ -4,7 +4,7 @@ agent.py - Part of ants project
 This model implements the actual agents on the grid (a.k.a. the ants)
 
 License: AGPL 3 (see end of file)
-(C) Alexander Bocken, Viviane Fahrni, Grace Kragho
+(C) Alexander Bocken, Viviane Fahrni, Grace Kagho
 """
 import numpy as np
 import numpy.typing as npt
@@ -16,7 +16,7 @@ class RandomWalkerAnt(Agent):
                  energy_0=1,
                  chemical_drop_rate_0 : dict[str, float]={"A": 80, "B": 80},
                  sensitivity_0=0.99,
-                 alpha=0.5, drop_chemical=None,
+                 alpha=0.6, drop_chemical=None,
                  betas : dict[str, float]={"A": 0.0512, "B": 0.0512},
                  sensitivity_decay_rate=0.01,
                  sensitivity_max = 1
diff --git a/main.py b/main.py
index 10162db..1216451 100755
--- a/main.py
+++ b/main.py
@@ -4,7 +4,7 @@ main.py - Part of ants project
 execute via `python main.py` in terminal or only UNIX: `./main.py`
 
 License: AGPL 3 (see end of file)
-(C) Alexander Bocken, Viviane Fahrni, Grace Kragho
+(C) Alexander Bocken, Viviane Fahrni, Grace Kagho
 """
 from model import ActiveWalkerModel
 from agent import RandomWalkerAnt
diff --git a/model.py b/model.py
index 18700ec..c88a204 100644
--- a/model.py
+++ b/model.py
@@ -5,7 +5,7 @@ This file implements the mesa model on which our ActiveRandomWalkerAnts
 will act
 
 License: AGPL 3 (see end of file)
-(C) Alexander Bocken, Viviane Fahrni, Grace Kragho
+(C) Alexander Bocken, Viviane Fahrni, Grace Kagho
 """
 
 import numpy as np
@@ -17,8 +17,6 @@ from mesa.datacollection import DataCollector
 from agent import RandomWalkerAnt
 
 class ActiveWalkerModel(Model):
-    # TODO: separate food and source into new agents?
-    # TODO: pheromone concentrations as well as agents?
     def __init__(self, width : int, height : int , num_max_agents : int,
                  num_initial_roamers : int,
                  nest_position : Coordinate,
@@ -67,6 +65,7 @@ class ActiveWalkerModel(Model):
         for key in ("A", "B"):
             field = self.grid.fields[key]
             self.grid.fields[key] =  field - self.decay_rates[key]*field
+            # TODO: plot to check whether exponential
 
         self.datacollector.collect(self)
 
diff --git a/multihex.py b/multihex.py
index c6a0ebc..e1ebae2 100644
--- a/multihex.py
+++ b/multihex.py
@@ -6,7 +6,7 @@ at the same location. The base for this code comes from the MultiGrid class
 in mesa/space.py
 
 License: AGPL 3 (see end of file)
-(C) Alexander Bocken, Viviane Fahrni, Grace Kragho
+(C) Alexander Bocken, Viviane Fahrni, Grace Kagho
 """
 
 from sys import dont_write_bytecode
diff --git a/server.py b/server.py
index 1a4e8d8..a81d5aa 100755
--- a/server.py
+++ b/server.py
@@ -8,7 +8,7 @@ For now it displays ant locations as well as pheromone A
 concentrations on two seperate grids
 
 License: AGPL 3 (see end of file)
-(C) Alexander Bocken, Viviane Fahrni, Grace Kragho
+(C) Alexander Bocken, Viviane Fahrni, Grace Kagho
 """
 
 import numpy as np