How much is 1 Earth in usd?

Could you please clarify what you mean by "1 Earth in USD"? Are you referring to a specific cryptocurrency or token related to environmental sustainability, or perhaps a conceptual idea? In general, currencies and cryptocurrencies are valued based on market demand and supply, so the value of any unit can fluctuate over time. If you're asking about the value of a specific asset, I would suggest checking reputable exchanges or market data providers for the most up-to-date information. However, if you're asking about the value of the planet Earth in monetary terms, that's a complex and subjective question that doesn't have a straightforward answer.