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25 8 月, 2023

日常生活中的辐射对人体有害吗?

辐射,看不见摸不着,又无处不在,想想真是一个可怕的东西。许多人会把身体上某方面的不适都怪罪为辐射导致的,例如把头疼、眼睛酸痛、脸上长痘痘,归咎于电脑辐射。为了防辐射,又会想到种种偏方,在电脑前放一盆仙人掌,传说可以吸收辐射。吃某种食物,据称可以防止辐射造成的损伤。

假如核尘来了

一些地方有些人开始抢购、囤积食盐,据说是因为担心日本福岛核电厂发生的泄漏会污染海洋,让以后的食盐没法食用。这种担心非常荒唐。即使发生了泄漏,也只是核电厂附近的海域受到污染,不可能整个海洋都受污染,核物质扩散到中国海域,早就被海水稀释得可以忽略了。退一步说,即使以后海盐都没法吃了,还有矿盐可备用呢。

奥巴马2009年在联合国大会上的发言

The United Nations was built by men and women like Roosevelt from every corner of the world — from Africa and Asia, from Europe to the Americas. These architects of international cooperation had an idealism that was anything but naïve — it was rooted in the hard-earned lessons of war; rooted in the wisdom that nations could advance their interests by acting together instead of splitting apart.

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