Ehrlich's theories lost steam after he lost a famous 1980 bet with economist Julian Simon, who wagered that any basket of resources Ehrlich might name would be cheaper at any date in the future.
After losing a bet in 1990 with an economist Ehrlich's theories lost steam.
Ehrlich's theories gained momentum after winning a big bet in 1999.
If the USPS has 0% inefficiencies the economic scale on their premium is $6.
A little boy sits on a swing.
The man is wearing a black vest.
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the dog was sleeping on his bed
The woman is skiing down a slope.