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 small Fire TV Stick plugs directly into your TV's HDMI port and is clearly designed to compete with Google's Chromecast. All the details are provided below. The Fire TV Stick officially goes on sale November 19, but the Amazon page is already saying that new pre-orders won't ship until January 2015. From Amazon.