Measuring a gas is NOT an easy task. In researching the most popular search engine on Internet, I typed into Google, "how to weigh a gas" and came up with the following hyperlink. To see how gases are weighed, click here:
Some problems with gas measurement accuracy are noted here:
"Accurately weighing small quantities of flowing gas is a very difficult thing to do," Remenyik said. Most methods determine the weight of gas by measuring it on a balance that requires a long time to collect samples or by deriving it from equations relating temperature, volume and pressure. Measuring temperature, volume and pressure are indirect mass measurement methods that will have some errors that accumulate in the calculations."
"...Also, balances that can measure 50- to 100- pound objects, the weight range of most gas containers, cannot accurately measure a few tenths of an ounce of gas inside the container. Scientists usually must spend hours or days collecting gas heavy enough to be weighed. Chemical reactions and adsorption significantly reduce the accuracy of indirect methods that derive the gas weight. "
Hydroelectric and nuclear power totally clean? Sometimes having a small carbon footprint is not the only environmental consideration.
Please rethink or research that better. Definitely wrong there on both counts. What do you think happens with spent nuclear fuel? The remnants stay around for thousands of years.
Hydroelectric projects can be disruptive to surrounding aquatic ecosystems. For instance, studies have shown that dams along the Atlantic and Pacific coasts of North America have reduced salmon populations by preventing access to spawning grounds upstream, even though most dams in salmon habitat have fish ladders installed.
Water exiting from turbines is typically much colder than the pre-dam water, which can change aquatic faunal populations, including endangered species.
Another disadvantage of hydroelectric dams is the need to relocate the people living where the reservoirs are planned.
Regarding wind power and others (such as solar): "Wind power but it obviously takes millions of tons of fossil fuels to manufacture all those huge windmills? "
The cost environmentally to mfr these windmills and solar panels is that it has a one-time effect. Whereas the cost for other less environmentally-friendly methods has a daily cumulative impact...damaging the environment over years and decades.