If hydrogen were to replace fossil fuel entirely, the researchers estimate that 60 to 120 trillion grams of hydrogen would be released each year into the atmosphere, assuming a 10-to-20-percent loss rate due to leakage.
The Fire TV can have a wired connection, the Fire TV Stick is wireless only. The Fire TV has Dolby Digital Plus & 5.1 surround sound, the Fire TV Stick is Dolby Digital Plus only. The Fire TV can do all Amazon games including hi-res video games, the Fire TV Stick only has a limited set of games it will play.
The Fire TV Stick addresses a number of issues we had with the Fire TV and comes with a much smaller price tag. It's not dramatically better than its competitors, but it's certainly not any worse. For $39, it's a perfectly viable streaming-media option, and the best one if you've already bought into Amazon's ecosystem.