diff --git a/core/src/environment.rs b/core/src/environment.rs
index dad15aa4..c7e238db 100644
--- a/core/src/environment.rs
+++ b/core/src/environment.rs
@@ -7,13 +7,14 @@ use revm::{
     primitives::{ExecutionResult, Log, TxEnv, U256},
     EVM,
 };
+
 use std::{
     fmt::Debug,
-    sync::{Arc, Mutex},
+    sync::{atomic::{AtomicUsize, Ordering},{Arc, Mutex}},
     thread,
 };
 
-use crate::utils::revm_logs_to_ethers_logs;
+use crate::{utils::revm_logs_to_ethers_logs, math::stochastic_process::poisson_process};
 use crate::{agent::Agent, middleware::RevmMiddleware};
 
 /// Type Aliases for the event channel.
@@ -22,6 +23,7 @@ pub(crate) type ExecutionSender = Sender<ExecutionResult>;
 pub(crate) type TxEnvSender = Sender<(ToTransact, TxEnv, ExecutionSender)>;
 pub(crate) type TxEnvReceiver = Receiver<(ToTransact, TxEnv, ExecutionSender)>;
 
+/// State enum for the [`Environment`].
 #[derive(Debug, Eq, PartialEq, Clone, Copy)]
 pub enum State {
     /// The [`Environment`] is currently running.
@@ -32,33 +34,30 @@ pub enum State {
     Stopped,
 }
 
-pub struct Time;
-
-impl Time {
-    pub fn new(occurances: f64) -> Self {
-        Self {}
-    }
-    pub fn default() -> Self {
-        Self {}
-    }
-}
 
+/// The environment struct.
 pub struct Environment {
+    /// label for the environment
     pub label: String,
     pub(crate) state: State,
     pub(crate) evm: EVM<CacheDB<EmptyDB>>,
+    /// Connection to the environment
     pub connection: Connection,
     /// Clients (Agents) in the environment
     pub clients: Vec<Arc<Agent<RevmMiddleware>>>,
-    // pub deployed_contracts: HashMap<String, Contract<RevmMiddleware>>,
-    pub time: Time,
+    /// expected events per block
+    pub lambda: f64,
 
 }
+
+/// Connection struct for the [`Environment`].
 #[derive(Debug, Clone)]
 pub struct Connection {
     pub(crate) tx_sender: TxEnvSender,
     tx_receiver: TxEnvReceiver,
     pub(crate) event_broadcaster: Arc<Mutex<EventBroadcaster>>,
+    /// expected events per block
+    pub tx_per_block: Arc<AtomicUsize>,
 }
 
 impl Environment {
@@ -73,6 +72,7 @@ impl Environment {
             tx_sender: transaction_channel.0,
             tx_receiver: transaction_channel.1,
             event_broadcaster: Arc::new(Mutex::new(EventBroadcaster::new())),
+            tx_per_block: Arc::new(AtomicUsize::new(0)),
         };
         Self {
             label,
@@ -80,21 +80,17 @@ impl Environment {
             evm,
             connection,
             clients: vec![],
-            time: Time::default(),
+            lambda: 0.0,
         }
     }
+    /// Set the expected events per block
+    pub fn configure_lambda(&mut self, lambda: f64) {
+        self.lambda = lambda;
+    }
 
-    // // time config
-    // pub fn configure_time(&mut self, time: u64) {
-
-    //     self =
-    //     self.evm.env.block.timestamp = U256::from(time);
-    // }
-
-    // TODO: We need to make this the way to add agents to the environment.
-    // in `agent.rs` we have `new_simulation_agent` which should probably just be called from this function instead.
-    // OR agents can be created (without a connection?) and then added to the environment where they will gain a connection?
-    pub fn add_agent(&mut self, agent: Agent<RevmMiddleware>) {
+    /// Creates a new [`Agent<RevmMiddleware`] with the given label.
+    pub fn add_agent(&mut self, name: String, connection: Connection) {
+        let agent = Agent::new_simulation_agent(name, connection);
         self.clients.push(Arc::new(agent));
     }
 
@@ -103,13 +99,20 @@ impl Environment {
         let tx_receiver = self.connection.tx_receiver.clone();
         let mut evm = self.evm.clone();
         let event_broadcaster = self.connection.event_broadcaster.clone();
+        let counter = Arc::clone(&self.connection.tx_per_block);
+        let expected_occurance = poisson_process(self.lambda, 1).unwrap();
         self.state = State::Running;
 
         //give all agents their own thread and let them start watching for their evnts
         thread::spawn(move || {
             while let Ok((to_transact, tx, sender)) = tx_receiver.recv() {
                 // Execute the transaction, echo the logs to all agents, and report the execution result to the agent who made the transaction.
+                if counter.load(Ordering::Relaxed) >= expected_occurance[0] as usize {
+                    evm.env.block.number += U256::from(1);
+                    counter.store(0, Ordering::Relaxed);
+                }
                 evm.env.tx = tx;
+                counter.fetch_add(1, Ordering::Relaxed);
                 if to_transact {
                     let execution_result = match evm.transact_commit() {
                         Ok(val) => val,