diff --git a/baystation12.dme b/baystation12.dme
index cb8bdbd39b..087bc817fa 100644
--- a/baystation12.dme
+++ b/baystation12.dme
@@ -1040,6 +1040,7 @@
 #include "code\modules\events\spontaneous_appendicitis.dm"
 #include "code\modules\events\viral_infection.dm"
 #include "code\modules\events\viral_outbreak.dm"
+#include "code\modules\events\wallrot.dm"
 #include "code\modules\flufftext\Dreaming.dm"
 #include "code\modules\flufftext\Hallucination.dm"
 #include "code\modules\flufftext\TextFilters.dm"
diff --git a/code/__HELPERS/unsorted.dm b/code/__HELPERS/unsorted.dm
index 659948266e..9b2c323e3a 100644
--- a/code/__HELPERS/unsorted.dm
+++ b/code/__HELPERS/unsorted.dm
@@ -1327,6 +1327,7 @@ proc/is_hot(obj/item/W as obj)
 
 //Is this even used for anything besides balloons? Yes I took out the W:lit stuff because : really shouldnt be used.
 /proc/is_sharp(obj/item/W as obj)		// For the record, WHAT THE HELL IS THIS METHOD OF DOING IT?
+	if(W.sharp) return 1
 	return ( \
 		istype(W, /obj/item/weapon/screwdriver)                   || \
 		istype(W, /obj/item/weapon/pen)                           || \
diff --git a/code/game/turfs/simulated/walls.dm b/code/game/turfs/simulated/walls.dm
index 5d055f1a8c..f06eb81ba3 100644
--- a/code/game/turfs/simulated/walls.dm
+++ b/code/game/turfs/simulated/walls.dm
@@ -3,6 +3,7 @@
 	desc = "A huge chunk of metal used to seperate rooms."
 	icon = 'icons/turf/walls.dmi'
 	var/mineral = "metal"
+	var/rotting = 0
 	opacity = 1
 	density = 1
 	blocks_air = 1
@@ -59,9 +60,11 @@
 			P.roll_and_drop(src)
 		else
 			O.loc = src
+
 	ChangeTurf(/turf/simulated/floor/plating)
 
 /turf/simulated/wall/ex_act(severity)
+	if(rotting) severity = 1.0
 	switch(severity)
 		if(1.0)
 			//SN src = null
@@ -84,7 +87,7 @@
 	return
 
 /turf/simulated/wall/blob_act()
-	if(prob(50))
+	if(prob(50) || rotting)
 		dismantle_wall()
 
 /turf/simulated/wall/attack_paw(mob/user as mob)
@@ -103,11 +106,11 @@
 
 /turf/simulated/wall/attack_animal(mob/living/simple_animal/M as mob)
 	if(M.wall_smash)
-		if (istype(src, /turf/simulated/wall/r_wall))
+		if (istype(src, /turf/simulated/wall/r_wall) && !rotting)
 			M << text("\blue This wall is far too strong for you to destroy.")
 			return
 		else
-			if (prob(40))
+			if (prob(40) || rotting)
 				M << text("\blue You smash through the wall.")
 				dismantle_wall(1)
 				return
@@ -120,7 +123,7 @@
 
 /turf/simulated/wall/attack_hand(mob/user as mob)
 	if (HULK in user.mutations)
-		if (prob(40))
+		if (prob(40) || rotting)
 			usr << text("\blue You smash through the wall.")
 			usr.say(pick(";RAAAAAAAARGH!", ";HNNNNNNNNNGGGGGGH!", ";GWAAAAAAAARRRHHH!", "NNNNNNNNGGGGGGGGHH!", ";AAAAAAARRRGH!" ))
 			dismantle_wall(1)
@@ -129,6 +132,11 @@
 			usr << text("\blue You punch the wall.")
 			return
 
+	if(rotting)
+		user << "\blue The wall crumbles under your touch."
+		dismantle_wall()
+		return
+
 	user << "\blue You push the wall but nothing happens!"
 	playsound(src.loc, 'sound/weapons/Genhit.ogg', 25, 1)
 	src.add_fingerprint(user)
@@ -143,6 +151,21 @@
 	//get the user's location
 	if( !istype(user.loc, /turf) )	return	//can't do this stuff whilst inside objects and such
 
+	if(rotting)
+		if(istype(W, /obj/item/weapon/weldingtool) )
+			var/obj/item/weapon/weldingtool/WT = W
+			if( WT.remove_fuel(0,user) )
+				user << "<span class='notice'>You burn away the fungi with \the [WT].</span>"
+				playsound(src.loc, 'sound/items/Welder.ogg', 10, 1)
+				for(var/obj/effect/E in src) if(E.name == "Wallrot")
+					del E
+				rotting = 0
+				return
+		else if(!is_sharp(W) && W.force >= 10 || W.force >= 20)
+			user << "<span class='notice'>\The [src] crumbles away under the force of your [W.name].</span>"
+			src.dismantle_wall(1)
+			return
+
 	//THERMITE related stuff. Calls src.thermitemelt() which handles melting simulated walls and the relevant effects
 	if( thermite )
 		if( istype(W, /obj/item/weapon/weldingtool) )
@@ -284,6 +307,24 @@
 		return attack_hand(user)
 	return
 
+// Wall-rot effect, a nasty fungus that destroys walls.
+/turf/simulated/wall/proc/rot()
+	if(!rotting)
+		rotting = 1
+
+		var/number_rots = rand(2,3)
+		for(var/i=0, i<number_rots, i++)
+			var/obj/effect/overlay/O = new/obj/effect/overlay( src )
+			O.name = "Wallrot"
+			O.desc = "Ick..."
+			O.icon = 'icons/effects/wallrot.dmi'
+			O.pixel_x += rand(-10, 10)
+			O.pixel_y += rand(-10, 10)
+			O.anchored = 1
+			O.density = 1
+			O.layer = 5
+			O.mouse_opacity = 0
+
 /turf/simulated/wall/proc/thermitemelt(mob/user as mob)
 	if(mineral == "diamond")
 		return
@@ -307,10 +348,18 @@
 	return
 
 /turf/simulated/wall/meteorhit(obj/M as obj)
-	if (prob(15))
+	if (prob(15) && !rotting)
 		dismantle_wall()
-	else if(prob(70))
+	else if(prob(70) && !rotting)
 		ChangeTurf(/turf/simulated/floor/plating)
 	else
 		ReplaceWithLattice()
-	return 0
\ No newline at end of file
+	return 0
+
+/turf/simulated/wall/Del()
+	for(var/obj/effect/E in src) if(E.name == "Wallrot") del E
+	..()
+
+/turf/simulated/wall/ChangeTurf(var/newtype)
+	for(var/obj/effect/E in src) if(E.name == "Wallrot") del E
+	..(newtype)
\ No newline at end of file
diff --git a/code/game/turfs/simulated/walls_reinforced.dm b/code/game/turfs/simulated/walls_reinforced.dm
index 455f474dbe..c2ef4050c1 100644
--- a/code/game/turfs/simulated/walls_reinforced.dm
+++ b/code/game/turfs/simulated/walls_reinforced.dm
@@ -11,7 +11,7 @@
 
 /turf/simulated/wall/r_wall/attack_hand(mob/user as mob)
 	if (HULK in user.mutations)
-		if (prob(10))
+		if (prob(10) || rotting)
 			usr << text("\blue You smash through the wall.")
 			usr.say(pick(";RAAAAAAAARGH!", ";HNNNNNNNNNGGGGGGH!", ";GWAAAAAAAARRRHHH!", "NNNNNNNNGGGGGGGGHH!", ";AAAAAAARRRGH!" ))
 			dismantle_wall(1)
@@ -20,6 +20,10 @@
 			usr << text("\blue You punch the wall.")
 			return
 
+	if(rotting)
+		user << "\blue This wall feels rather unstable."
+		return
+
 	user << "\blue You push the wall but nothing happens!"
 	playsound(src.loc, 'sound/weapons/Genhit.ogg', 25, 1)
 	src.add_fingerprint(user)
@@ -35,6 +39,20 @@
 	//get the user's location
 	if( !istype(user.loc, /turf) )	return	//can't do this stuff whilst inside objects and such
 
+	if(rotting)
+		if(istype(W, /obj/item/weapon/weldingtool) )
+			var/obj/item/weapon/weldingtool/WT = W
+			if( WT.remove_fuel(0,user) )
+				user << "<span class='notice'>You burn away the fungi with \the [WT].</span>"
+				playsound(src.loc, 'sound/items/Welder.ogg', 10, 1)
+				for(var/obj/effect/E in src) if(E.name == "Wallrot")
+					del E
+				rotting = 0
+				return
+		else if(!is_sharp(W) && W.force >= 10 || W.force >= 20)
+			user << "<span class='notice'>\The [src] crumbles away under the force of your [W.name].</span>"
+			src.dismantle_wall()
+			return
 
 	//THERMITE related stuff. Calls src.thermitemelt() which handles melting simulated walls and the relevant effects
 	if( thermite )
diff --git a/code/modules/events/event_dynamic.dm b/code/modules/events/event_dynamic.dm
index 6af66ced1b..fa0a6c6efc 100644
--- a/code/modules/events/event_dynamic.dm
+++ b/code/modules/events/event_dynamic.dm
@@ -61,6 +61,7 @@
 	possibleEvents[/datum/event/ionstorm] = 25 + active_with_role["AI"] * 25 + active_with_role["Cyborg"] * 25 + active_with_role["Engineer"] * 10 + active_with_role["Scientist"] * 5
 	possibleEvents[/datum/event/grid_check] = 25 + 10 * active_with_role["Engineer"]
 	possibleEvents[/datum/event/electrical_storm] = 75 + 25 * active_with_role["Janitor"] + 5 * active_with_role["Engineer"]
+	possibleEvents[/datum/event/wallrot] = 50 * active_with_role["Engineer"] + 100 * active_with_role["Botanist"]
 
 	if(!spacevines_spawned)
 		possibleEvents[/datum/event/spacevine] = 5 + 10 * active_with_role["Engineer"]
@@ -180,6 +181,7 @@
 	active_with_role["AI"] = 0
 	active_with_role["Cyborg"] = 0
 	active_with_role["Janitor"] = 0
+	active_with_role["Botanist"] = 0
 
 	for(var/mob/M in player_list)
 		if(!M.mind || !M.client || M.client.inactivity > 10 * 10 * 60) // longer than 10 minutes AFK counts them as inactive
@@ -212,4 +214,7 @@
 		if(M.mind.assigned_role == "Janitor")
 			active_with_role["Janitor"]++
 
+		if(M.mind.assigned_role == "Botanist")
+			active_with_role["Botanist"]++
+
 	return active_with_role
diff --git a/code/modules/events/wallrot.dm b/code/modules/events/wallrot.dm
new file mode 100644
index 0000000000..02e33c52d7
--- /dev/null
+++ b/code/modules/events/wallrot.dm
@@ -0,0 +1,37 @@
+/turf/simulated/wall
+
+
+datum/event/wallrot
+	var/severity = 1
+
+datum/event/wallrot/setup()
+	announceWhen = rand(0, 3000)
+	endWhen = announceWhen + 1
+	severity = rand(5, 10)
+
+datum/event/wallrot/announce()
+	command_alert("Harmful fungi detected on station. Station structures may be contaminated.", "Biohazard Alert")
+
+datum/event/wallrot/start()
+	spawn()
+		var/turf/center = null
+
+		// 100 attempts
+		for(var/i=0, i<100, i++)
+			var/turf/candidate = locate(rand(1, world.maxx), rand(1, world.maxy), 1)
+			if(istype(candidate, /turf/simulated/wall))
+				center = candidate
+
+		if(center)
+			// Make sure at least one piece of wall rots!
+			center:rot()
+
+			// Have a chance to rot lots of other walls.
+			var/rotcount = 0
+			for(var/turf/simulated/wall/W in range(5, center)) if(prob(50))
+				W:rot()
+				rotcount++
+
+				// Only rot up to severity walls
+				if(rotcount >= severity)
+					break
\ No newline at end of file
diff --git a/code/modules/reagents/Chemistry-Reagents.dm b/code/modules/reagents/Chemistry-Reagents.dm
index 0036ca2333..e839cf34a8 100644
--- a/code/modules/reagents/Chemistry-Reagents.dm
+++ b/code/modules/reagents/Chemistry-Reagents.dm
@@ -1214,6 +1214,17 @@ datum
 				..()
 				return
 
+			// Clear off wallrot fungi
+			reaction_turf(var/turf/T, var/volume)
+				if(istype(T, /turf/simulated/wall))
+					var/turf/simulated/wall/W = T
+					if(W.rotting)
+						W.rotting = 0
+						for(var/obj/effect/E in W) if(E.name == "Wallrot") del E
+
+						for(var/mob/O in viewers(W, null))
+							O.show_message(text("\blue The fungi are completely dissolved by the solution!"), 1)
+
 			reaction_obj(var/obj/O, var/volume)
 				if(istype(O,/obj/effect/alien/weeds/))
 					var/obj/effect/alien/weeds/alien_weeds = O
diff --git a/code/modules/reagents/reagent_containers/spray.dm b/code/modules/reagents/reagent_containers/spray.dm
index da78e252a3..5073564553 100644
--- a/code/modules/reagents/reagent_containers/spray.dm
+++ b/code/modules/reagents/reagent_containers/spray.dm
@@ -49,12 +49,20 @@
 
 	D.icon += mix_color_from_reagents(D.reagents.reagent_list)
 
+	var/A_turf = get_turf(A)
+
 	spawn(0)
 		for(var/i=0, i<3, i++)
 			step_towards(D,A)
 			D.reagents.reaction(get_turf(D))
 			for(var/atom/T in get_turf(D))
 				D.reagents.reaction(T)
+
+				// When spraying against the wall, also react with the wall, but
+				// not its contents.
+				if(get_dist(D, A_turf) == 1 && A_turf.density)
+					D.reagents.reaction(A_turf)
+				sleep(2)
 			sleep(3)
 		del(D)
 
diff --git a/html/changelog.html b/html/changelog.html
index b18d546282..5b6aa9e5a1 100644
--- a/html/changelog.html
+++ b/html/changelog.html
@@ -58,7 +58,16 @@ Stuff which is in development and not yet visible to players or just code relate
 should be listed in the changelog upon commit though. Thanks. -->
 
 <!-- To take advantage of the pretty new format (well it was new when I wrote this anyway), open the "add-to-changelog.html" file in any browser and add the stuff and then generate the html code and paste it here --><div class="commit sansserif">
-	<h2 class="date">April 24, 2013</h2>
+<div>
+  <h2 class="date">May 18th, 2013</h2>
+	<h3 class="author">CIB updated:</h3>
+	<ul class="changes bgimages16">
+		<li class="rscadd">A new event type: Wallrot. Use welder or plantbgone on infected walls.</li>
+		<li class="tweak">Newscasters now can deliver preset news stories over the course of a round. See http://baystation12.net/forums/viewtopic.php?f=14&t=7619 to add your own!</li>
+	</ul>
+</div>
+<div>
+  <h2 class="date">April 24, 2013</h2>
 	<h3 class="author">Jediluke69 updated:</h3>
 	<ul class="changes bgimages16">
 		<li class="rscadd">Added 5 new drinks (Kira Special, Lemonade, Brown Star, Milkshakes, Rewriter)</li>