No exhaust and no fumes: Hydrogen-powered bus taking to Birmingham city streets in green technology pilot program
- Alternate Title Link: http://blog.al.com/spotnews/2014/04/no_exhaust_and_no_fumes_hydrog.html
Normally, dentists drill away at a tooth to access any cavities to then fill them in. But the new treatment involves sliding a sheet between the teeth and cavities. Called resin infiltration, drilling isn't needed and it can be done without numbing. And experts now say the system, currently under trial, could be a game-changer.