科学态度的本质是什么，研究和应用物理、生物、化学、地质、工程、医学或其他科学的人的态度是什么？
What is the nature of the scientific attitude, the attitude of the man or woman who studies and applies physics, biology, chemistry, geology, engineering, medicine or any other science?
有科学家有预感，怀孕的妇女的饮食和对各种化学物质的接触会打开一些致命的基因而关闭其他一些基因。
Some scientists have a hunch that a pregnant woman’s diet and her exposure to various chemicals turn on some fetal genes and turn off others.
科学家告诉我们，笑对我们的健康有好处；它释放内啡肽和其他含积极能量的化学物质到我们的肌体。
Scientists tell us that laughter is good for our health; that it releases endorphins and other positively powerful chemicals into our system.
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