it's not expensive considering the alternative is we all die in a giant fireball.
edit: Also currently on HN frontpage is "Climate threats now dominate long-term risks, survey of global leaders finds" so maybe adverting that is worth the cost.
edit: Also currently on HN frontpage is "Climate threats now dominate long-term risks, survey of global leaders finds" so maybe adverting that is worth the cost.
Hyperbole like that will only lead to the rest of your arguments getting ignored. Even Venus, with its runaway greenhouse effect, is not a "giant fireball" (we even have pictures of its surface).