A | 碧山东居民委员会举办食物分发活动，有居民却用石头和塑料袋等物品来占位排队，引起关注。 While scientists and science fiction authors alike have long dreamed of sending crewed missions to Mars, a new study suggests these plans may hit a snag – a big one.,The authors of a yet to be peer-reviewed study argue that the participants of such a mission to Mars would end up being exposed to radiation – namely, to “energetic charged particles from Galactic and Solar origin” – both while in transit and while on the planet itself, with the “thin spacecraft shield” and “rarefied Martian atmosphere” offering little in the way of protection.,The research team attempted to gauge the impact of a simulated 1,000-day mission to Mars on various organs of the human body, and concluded that astronauts may be exposed to radiation doses above one Sievert, which is over the safe limit set by most space agencies, New Scientist points out.,“We suggest mitigation strategies such as improved ways of shielding and dietary supplements, and make recommendations for the safety of astronauts in future crewed missions to Mars,” the team wrote in the abstract of their work available on the arXiv preprint server.,Ideas about how astronauts may be protected from radiation during a mission to Mars have already been proposed, such as the concept of a radiation shield comprised of a fungus found growing at the Chernobyl Nuclear Power Plant.,Last year, one architecture studio even unveiled a project for a self-sufficient and sustainable city that would be built on the red planet itself.。（取自面子书）（新加坡讯）碧山东居民委员会举办食物分发活动，有居民却用石头和塑料袋等物品来占位排队，而不是亲自或找亲友去排队，事件引起关注。《8视界新闻网》报导，碧山东第一分区居民委员会（Bishan East Zone 1 Residents' Network）上周五（23日）面子书发布贴文，感谢居民热烈支持当天下午举行的一场食物分发活动，一大早就井然有序前来排队，领取免费食物，表现出了友好的邻里精神。这个活动于碧山12街第112座组屋底层举行，该区志愿者往往会将收集到的多馀食物重新分配并免费分发给居民，以减少食物浪费，同时帮助有需要的人。不过，根据贴文，居委会也观察到有居民“发挥创意”，用物品来占位排队，并指这是不被允许的。“请注意我们只接受居民真人排队…… 所有放置在地板的物品将被视为垃圾，将会被清理或没收。”为了说明情况，居委会也分享了两张照片，其中一张显示数十位居民井然有序地排著队，并配上一张笑脸的表情符号。值得一提的是，照片中的墙壁上还贴有禁止乱丢垃圾的告示牌。另一张照片则配有一脸惊讶的表情符号，可见有居民将石头放置在塑料袋或纸巾上来占位，也有居民用其他物品来占位，如黑布、塑料袋等。碧山东第一分区居委会回复《8视界新闻网》询问时说，在场人员当时看到以上情况后，已立即提醒居民切勿用物品占位。“我们除了在现场有提醒居民以外，也在面子书发布了贴文，希望可以让居民们知道千万不要这样做。”居委会指出，今天（27日）晚上10时30分将有一场派发免费面包的活动，到时现场人员也会在场提醒。针对居民的以上行为，不少网民留言赞同居委会的做法，并指为了公平起见，居民不应该插队，也不应该有占位的行为。碧山东第一分区居委会自2021年11月起开始推出名为“Harvest in Harmony”的食物拯救计划，以减少食物浪费，并且帮助有需要的居民。过去三年来，这项计划获得了该社区的热烈支持，共数千个家庭受益。
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