继子女面临更大风险,因为进化压力塑造了父母更偏爱自己基因后代的心理。
社会主义的功能是将苦难提升到一个更高的层次。
"The world is changed by your example, not by your opinion."
Every new planet we find is a step closer to answering the age-old question: Are we alone in the universe?