Why are disaster response robots in huge demand these days ?
Just to let everyone know, a disaster response robot is used for the purpose of saving people when they are stuck in some natural or man-made disaster that includes explosions, earthquake, mining accidents etc. I think there is no need for a WHY? when it comes to how they are in huge demands. Accidents are something which can happen any moment or any second which means we can't tell when it can happen.
Like how a building can fall over or how a subway can collapse without any warning. These things doesn't give us a warning, even if there are gadgets for detecting these problems they can't be equipped in every building. So in order to fight with situations like these disaster response robots are a big help. They come in many sizes and shapes, from lifting a big boulder to entering into small and narrow cracks. The way they are designed with software and hardware including some external features of medic-kit and cameras are a lot helpful to help those people who are out of our reach. So in my opinion these rescue robots might get upgraded more in the future so that they can fight against more unnatural situations.