31. Indeed, the human history has not been merely touched by global climate change, some scientists argue, it has in some instances been driven by it.

　　32. It is true that in this country we have more overweight people than ever before, and that, in many cases, being over-weight correlates with an increased risk of heart and blood vessel disease.

　　33. Science fiction is not only change speculator but change agent, sending an echo from the future that is becoming into the present that is sculpting it.

　　34. It is the capacity of the computer for solving problems and making decisions that represents its greatest potential and that poses the greatest difficulties in predicting the impact on society.

　　35. Depending upon how the couple reacts to these new conditions, it could create a stronger equal partnership or it could create new insecurities.

　　36. As a consequence, it may prove difficult or impossible to establish for a successful revolution a comprehensive and trustworthy picture of those who participated or to answer even the most basic questions one might pose concerning the social origins of the insurgents.

　　37. Yet Walzer’s argument, however deficient, does point to one of the most serious weaknesses of capitalism—namely, that it brings to predominant positions those people who, however legitimately they have earned their material rewards, often lack those important qualities which evoke affection or admiration.

　　38. However, it is those of us who are paid to make the decisions to develop, improve and enforce environmental standards, I submit, who must lead the charge.

　　39. The theory, known as the fetal origins of adult disease hypothesis, postulates that when a fetus is undernourished, it diverts resources to areas it really needs at the time, such as the brain, at the expense of organs it will need later in life, such as the lungs.

　　40. Whether the productivity gains that result from new industries based on new technology are properly reflected in the indices we use to measure productivity or not, each of these industries has given us a quantum jump in productivity, no matter how you choose to define it.

　　41. The emphasis on data gathered first-hand, combined with a cross-cultural perspective brought to the analysis of cultures past and present, makes this study a unique and distinctively important social science.

　　42. It is recounted of Thomas Carlyle that when he heard of the illness of his friend, Henry Tailor, he went off immediately to visit him, carrying with him in his pocket what remained of a bottle of medicine formerly prescribed for an indisposition of Mrs Carlyle’s.

　　43. The question of whether the decrease in plant fecundity caused by the spraying of pesticides actually causes a decline in the overall population of flowering plant species still remains unanswered.

　　44. President Bush, in a June 11 speech on global climate change, described as "fatally flawed" the 1997 treaty negotiated in Kyoto, Japan, by the United States and other industrial countries but later rejected by the Bush Administration.

　　45. Given the great expense of conducting such experiments with proper controls, and the limited promise of experiments performed thus far, it is questionable whether further experiments in this area should even be conducted.

　　46. One of the first measures proposed by president Franklin D .Roosevelt when he took office in 1933 was the Agricultural Adjustment Act, which was subsequently passed by Congress.

　　47. As the century developed, the increasing magnitude and complexity of the problems to be solved and the growing interconnection of different disciplines made it impossible, in many cases, for the individual scientist to deal with the huge mass of new data, techniques and equipment required for carrying out research accurately and efficiently.

　　48. If courses in design, which in a strongly analytical engineering curriculum provide the background required for practical problem solving are not provided, we can expect to encounter silly but costly errors occurring in advanced engineering systems.

　　49. There is no more difference, but there is just the same kind of difference, between the mental operations of a man of science and those of an ordinary person, as there is between the operations and methods of a baker or of a butcher weighing out his goods in common scales, and the operations of a chemist in performing a difficult and complex analysis by means of his balance and finely graded weights.

　　50. It is not that the scales in the one case, and the balance in the other, differ in the principles of their construction or manner of working; but that the latter is a much finer apparatus and of course much more accurate in its measurement than the former.

　　51. Probably there is not one here who has not in the course of the day had occasion to set in motion a complex train of reasoning, of the very same kind, though differing in degree, as that which a scientific man goes through in tracing the causes of natural phenomena.

　　52. The patients attending the out-patients departments of our hospitals feel that they have not received adequate treatment unless they are able to carry home with them some tangible remedy in the form of a bottle of medicine, a box of pills or a small jar of ointment.

　　53. There is no quicker method of disposing of patients than by giving them what they are asking for, and since most medical men in the Health Services are over-worked and have little time for offering time-consuming and little-appreciated advice on such subjects as diet, right living and the need for abandoning bad habits, etc, the bottle, the box and the jar are almost always granted them.

　　54. It is recounted of Thomas Carlyle that when he heard of the illness of his friend, Henry Tailor, he went off immediately to visit him, carrying with him in his pocket what remained of a bottle of medicine formerly prescribed for an indisposition of Mrs. Carlyle’s.

　　55. Carlyle was entirely ignorant of what the bottle in his pocket contained, of the nature of illness from which his friend was suffering, and of what had previously been wrong with his wife, but a medicine that had worked so well in one form of illness would surely be of equal benefit in another, and comforted by the thought of the help he was bringing to his friend, he hastened to Henry Tailor’s house.

　　56. It is often pointed out that, however ingenious they may be about future technologies, many SCIENCE FICTION writers exhibit an implicit conservative bias in their stories, insofar as social projections are either ignored or based on variations of the present status quo or of historical social systems reshuffled whole-cloth into the future.

　　57. The underlying assumption of every kind of government by wisers and betters is that people on the whole are not fit to manage their own affairs, but must have someone else do it for them, and there is no paradox when such a government treats its subjects without respect, or deals with them on the basis of their having no rights that the government must take into account.

　　58. While it is perhaps puzzling that Jordan and Turner do not see that there is no logic that requires dualism as a philosophical basis for preservation, more puzzling is the sharpness and ruthlessness of their attack on preservationists, reinforced by the fact that they offer little, if any, criticism of those who have robbed the natural world.

　　59. Americans who stem from generations which left their old people behind and never closed their parents’ eyelids in death, and who have experienced the additional distance from death provided by two world wars are today pushing away from them both a recognition of death and a recognition of the tremendous significance – for the future – of the way we live our lives.

　　60. Acceptance of the inevitability of death, which, when faced, can give dignity to life, and acceptance of our inescapable role in the modern world, might transmute our anxiety about making the right choices, taking the right precautions and the right risks into the sterner stuff of responsibility, which ennobles the whole face rather than furrowing the forehead with little wrinkles of worry.