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The Earth 's climate began a warming trend after the " Little Ice Age " ended in the mid-1800s , long before global industrial development led to substantial increases in greenhouse gases beginning in the middle of the 20th century . Tried-and-true sides include red cabbage , German potato salad , sauerkraut and sp ä tzle — little German noodles that get dressed up like pasta at Vreny 's , with combinations of cheese , ham , mushrooms and tomatoes . Bauerwurst has a coarse texture and the spicy flavor of mustard seeds and marjoram . Even if the goal is as important as protecting human health , there comes a point at which the marginal benefit derived from spending one more dollar is too small to justify in light of other possible uses for the money . None of these pieces of evidence would be convincing in and of themselves .