 Day three of covering every SCP on the wiki in under 60 seconds. Let's go. SCP-003 has two pieces. The first part is literally a living motherboard. It's made out of biological parts and if it falls under a certain temperature, then it will start to grow and it will incorporate everything around it that it can find, including the organic tissue if it can't find anything else. In reality, it's an alien intelligence that's trying to better understand the world and maybe take it over because it thinks it can make the world better. The SCP Foundation is trying desperately to keep it contained because otherwise the world might end. The second part of the anomaly keeps it in check by shrinking it back down. If it were to fail, then the motherboard would grow out of control and take over everything. I guess we'd better hope it doesn't fail.