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Who are Astra and Cosmo?
They are alien planet doctors.
What planet are Astra and Cosmo checking?
Earth
Who was the boss on Earth 230 million years ago?
Mr. T-Rex
When Astra and Cosmo comes back to visit Earth, is it warmer or colder?
It is warmer.
Are there many trees on Earth now?
No, there aren't.
Is the air cleaner in the future?
Not, it's worse.
According to Astra and Cosmo, Earth was healthier without...
cars
Instead of cars, what do Astra and Cosmo tell Earth people to use?
bikes
Astra and Cosmo also suggest that Earth people should not forget to...
recycle
