Tiny oysters play big role in stabilizing eroding shorelines

As sea levels rise and buildings by coasts are increasingly endangered, communities around the world are turning to the small but mighty oyster to help stabilize shorelines. By establishing oyster colonies along badly eroded shorelines, governments and volunteer groups are creating natural speed bumps designed to blunt the force of waves and slow down erosion.

Fleet of hydrogen passenger trains debuts in Germany

A fleet of hydrogen-powered passenger trains is replacing diesel trains that previously operated on nonelectrified tracks in Germany. The trains use hydrogen fuel cells to generate electricity, saving about 420,000 gallons of diesel fuel a year.