| > Better superconductors means better magnets, which means cheaper fusion. Notably, what is required for this is superconductors with a higher critical field strength. A higher critical temperature eases cooling requirements somewhat but does not in itself make fusion easier. Also, quite a few other advances are required before home appliance-sized fusion reactors become feasible. After all, the largest part of most fission plants has to do with generating power from steam, not so much the nuclear reaction itself. > If anyone could get highly detailed MRI scans whenever they wanted, a huge amount of disease could be prevented. I think this is oversold. Regular MRI screening without any indication is generally regarded as unproductive not because of the cost of the scan, but because of the high number of false positives. Any normal human body is bound to contain some number of benign growths. |