diff --git a/agent.cc b/agent.cc
index 5922000..2ed30bb 100644
--- a/agent.cc
+++ b/agent.cc
@@ -83,7 +83,8 @@ agent::die(void)
 {
 	assert(!dead);
 	dead = true;
-	energy = world::dead_body_energy;
+	if (energy < 0) energy = 0;
+	energy = energy * world::dead_body_energy_carryover + world::dead_body_energy;
 }
 
 void
diff --git a/world.h b/world.h
index df8a26e..edb8ddd 100644
--- a/world.h
+++ b/world.h
@@ -9,6 +9,7 @@ struct world {
 	const static int sun_energy = 1;
 
 	const static int dead_body_energy = 500;
+	const static double dead_body_energy_carryover = 0.5;
 	const static int dead_decay = -1;
 };