Biến phân thành tiền
ột thành phố Mỹ sẽ xây dựng một khu công nghiệp mà trong đó điện được sản xuất từ phân gia súc.Thành phố Greeley có gần 100.000 dân nhưng có tới vài trăm nghìn trâu, bò. Ảnh: wordpress.com.Người dân ở Greeley, bang Colorado, Mỹ chủ yếu sống nhờ nông nghiệp và các ngành liên quan tới nông nghiệp. Ở ngoại ô thành phố, người dân nuôi vài trăm nghìn con trâu, bò để lấy sữa, thịt. Phân của chúng ngày càng nhiều và trở thành một vấn đề khiến chính quyền thành phố đau đầu.
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