What is this? It flashes every time an ambulance speeds by. They are all over my city

It’s a traffic control system designed to give emergency vehicles the green light — literally. That device is called an Opticom™, made by Global Traffic Technologies (GTT). Here’s how it works: Emergency vehicles are equipped with an emitter, which sends out a visible or infrared strobe signal. Traffic intersections have an Opticom receiver, mounted near … Read more

How my toe decided to grow back after it got removed.

What is onychogryphosis? Onychogryphosis, also known as ram’s horn nail, is a nail disorder resulting from slow nail plate growth. It is characterised by an opaque, yellow-brown thickening of the nail plate with elongation and increased curvature [1,2]. Who gets onychogryphosis? There have been a few reports of congenital onychogryphosis, and onychogryphosis can be seen in a number of rare genodermatoses. Acquired onychogryphosis is … Read more

I simply cannot get this out of my mind. Went camping last weekend. As we were looking for a spot, we came across this…. something…?

I simply cannot get this out of my mind. Went camping last weekend in BLM area (Northeast WA State). As we were looking for a spot, we came across this…. something…??? I thought it was insulation at first and got out to check. Not insulation. This log of fleshy disgusting whateverness. There was no smell, … Read more

Stumbled On This While Hiking In The Alps

Answered by u/Pavotine: That’s an anti-personnel mine. Do not mess with it and inform the relevant authorities. I am always amazed at how much unexploded or discarded weapons end up on this sub. Answered by u/Davis_o_the_Glen: Former Jugoslavian PMR-2A, with what looks like a UPMR-2 fuze. The exact designation is not relevant. It’s an unexploded … Read more