▲ 少年和科学家互传的 106 张纸条 10 月底，「2025 全球顶尖科学家大会」在上海举行，这是亚洲地区规格最高的国际科学大会。「Knock Knock 世界」编辑部以及两位少年听友薛子辰和刘奕霖来到了现场，带着来自 77 个青少年的提问 采访了世界 各地、不同领域的科学家 。和传统印象中「象牙塔」里的科学家不同，真正走进会场后，我们看到了一个个 非常具体的人。 ▲科技女生与顶尖科学家面对面交流｜图源：欧莱雅中国 现场一个圆桌讨论会上坐着几位远道而来的科学家。第一个问题是子辰提出来的，她说最近非常苦恼自己的长 头发，老师和妈妈都建议她剪短一些，这样可以有更多的时间花在学习上。所以她真的很想知道，要想成为女 性科研工作者，是不是要剪短头发呢？ 在坐的科学家一下就笑了，她们面对的是一位中学女生的发问。荷兰的物理天文学家宁克·范德马雷尔率先接 过话筒，伸出自己涂着红指甲油的手，非常认真地说：「我今天在路上其实还弄坏了一只指甲，所以你看，我 也会在意自己的外表。我喜欢打理自己，这是我个性的一部分。科学家不需要去符合某种该有的形象，我们不 必剪短头发，也不必丢掉漂亮的衣服。你可以保持自己喜欢的样子，同时仍然是一位出 ...

Group 1 - The "Knock Knock World" podcast is a collaborative production by "Sounding Vibrant" and "One Tenth," aimed at unlocking global fresh perspectives for youth [5][9] - The first season of "Knock Knock World" is available on major audio platforms, with three free trial episodes offered, and the subscription price is set at 365 yuan per year [5][8] - The podcast updates every Monday, Wednesday, and Friday at 6:00 AM, with each episode lasting approximately 10 minutes [7][5] Group 2 - The recent offline selection meeting for "Knock Knock World" took place in Shanghai, allowing participants to visit the Disney office and discuss upcoming topics, including the release of "Zootopia 2" [1] - Various engaging questions were posed during the selection meeting, focusing on children's education and cultural events, highlighting the curiosity-driven approach of the discussions [1][3] - The podcast aims to connect with young listeners by addressing relevant and thought-provoking topics, fostering a sense of inquiry and exploration [3]

Group 1 - The article discusses the impact of ultra-processed foods on human health, highlighting the use of unfamiliar additives that the body cannot recognize [4][5] - It emphasizes the unrealistic beauty standards perpetuated by various industries, including fitness and fashion, which can lead to unhealthy dieting behaviors [6][9] - The article notes that historical energy consumption patterns of ordinary farmers involved significant physical activity, contrasting with modern sedentary lifestyles [8] Group 2 - The article explains the carbon credit system, where companies can purchase credits to offset their carbon emissions, with one credit awarded for every ton of CO2 reduced [7][8] - It mentions that the Chinese government initially targeted major carbon emitters in the power generation sector, expanding to include industries like steel and cement, which contribute over 60% of the country's CO2 emissions [9] - The article points out that not all environmental projects generate carbon credits; only certified projects, such as renewable energy and afforestation, qualify [9][10] Group 3 - The article raises concerns about the environmental impact of fireworks on fragile ecosystems, specifically referencing an incident in the Tibetan Plateau where a large number of fireworks were set off [12][13] - It discusses the ecological consequences of such events, particularly on local wildlife, and the potential long-term effects of pollutants from fireworks [14][15]

Group 1: Globalization and Cultural Influence - The podcast "Knock Knock World" discusses various global topics, including the influence of American films in Europe, where American films accounted for nearly 80% of box office share by 1994, up from about one-third in the late 1960s [3] - The article highlights the perception of World War II, where many associate it primarily with the European front, despite the proximity of the Asian and Pacific theaters [3][5] - The impact of films like "Schindler's List" is emphasized, aiming to educate younger generations on historical lessons and the importance of standing up against injustice [5] Group 2: Environmental Initiatives in Africa - The rise of Chinese non-woven fabric bags in African markets, particularly in Tanzania, Kenya, and Rwanda, is noted, with prices ranging from 0.5 to 1 RMB per bag [6] - Kenya's strict plastic bag ban, considered one of the toughest globally, imposes severe penalties for violations, reflecting a proactive stance on environmental issues despite economic challenges [7] - The World Economic Forum reports that 5 million tons of plastic waste enter the oceans annually, with projections indicating that by 2048, there could be more plastic in the oceans than fish [8] Group 3: Wildlife Conservation Efforts - The construction of wildlife crossings, such as overpasses and underpasses, is discussed, with statistics indicating that 1 to 2 million animals die annually in the U.S. due to vehicle collisions [10] - The need for specialized animal crossings is highlighted, as different species have varying preferences for crossing structures, which can impact their survival and reproduction [10] - The article mentions the importance of creating these crossings to mitigate the negative effects of human infrastructure on wildlife populations [10]