Mokaddem explains that there are two ways to do this: either use electrons as the fuel, stored in batteries or hydrogen fuel ...

The shortest line on a flat map doesn't always translate to the shortest route in the air, and that's just one reason why ...

Downtown San Francisco has only observed two days this summer since June 1 at or above 70 degrees. Normally, there are between 14 and 15 70-degree or above days at this point in the season.