The researchers say that “goods and services ” ​ — in the form of food, water, air, shelter, fuel, clothing, medicine, and storm and flood protection — ​ provided in return are worth at least $4.4 trillion, a 100 - to - 1 benefit - cost ratio, reports London’s newspaper The Guardian.
Para peneliti mengatakan bahwa ” barang dan jasa ” ​ — dalam bentuk makanan, air, udara, penaungan, bahan bakar, pakaian, obat - obatan, dan perlindungan terhadap badai serta banjir ​ — yang dihasilkan sedikitnya akan bernilai 4,4 triliun dolar AS, dengan rasio 100 keuntungan banding 1 kerugian, lapor surat kabar London The Guardian.