One Big Ad orgy is it.
No ads on the BBC, ever. Or at least until the current Government is done with commercialising it.
That holds in this country, however, content from the BBC website is ad-ridden when viewed from outside UK.
Now I have reason to get one.
what? a tat(too) or some tat (i.e. an Apple watch)?
not really, the "lifting capacity" is from the difference in mass between lifting gas and surrounding air. Air is ~29 g/mol, so the ratio of lifting capacity of H2:He is
[(29 - 2) / 29] : [(29 - 4) / 29] = 27/25,
works out at 8% difference. The containment vessel's weight is typically more significant than the gas itself in a lighter-than-air craft.
Balloons with He3 give only 3% more lift than He4, lunacy!
delete something out of your history
consider using porn^h^h^h^h incognito mode rather than editing history
"You can't get very far in this world without your dossier being there first." -- Arthur Miller