4% of global warming to date. Flying will still be possible (and not uncommon) in a net zero world. Maybe americans will have to take the train to see their relatives, but they could just DACCS if they love TSA controls so much.
Like I said, it counts almost double. Aviation makes up 4% of the impact when 90% of the global population isn’t even flying in a year. Traveler numbers are tiny compared to other modes yet it causes a 4% chunk.
Aviation is outright terrible in its impact compared to rail, on corridors where both are an option. Of course, for many travels, only aviation is in option. That is a reality but doesn’t make aviation any better.
I am no expert at all in this field, but I think rocket fuels are often quite differently composed than plane fuels. If you just use liquid oxygen and hydrogen, your only reaction product will be water, which isn’t a strong greenhouse gas (despite being the dominant on by sheer amount). Of course there are also rocket fuels which blast out carbon products like there is no tomorrow.
Aviation is about 2.5% of global emissions.
In the long run then yes, we need carbon neutral fuels, but it should be possible for people to fly a little and not destroy the planet.
The reason why aviation emissions are so bad is not so much the amount but where exactly they are emitted.
https://ourworldindata.org/global-aviation-emissions
4% of global warming to date. Flying will still be possible (and not uncommon) in a net zero world. Maybe americans will have to take the train to see their relatives, but they could just DACCS if they love TSA controls so much.
Like I said, it counts almost double. Aviation makes up 4% of the impact when 90% of the global population isn’t even flying in a year. Traveler numbers are tiny compared to other modes yet it causes a 4% chunk.
Aviation is outright terrible in its impact compared to rail, on corridors where both are an option. Of course, for many travels, only aviation is in option. That is a reality but doesn’t make aviation any better.
Agreed on all points.
Which gives me huge misgivings about the current space push.
I am no expert at all in this field, but I think rocket fuels are often quite differently composed than plane fuels. If you just use liquid oxygen and hydrogen, your only reaction product will be water, which isn’t a strong greenhouse gas (despite being the dominant on by sheer amount). Of course there are also rocket fuels which blast out carbon products like there is no tomorrow.