Did you know that in many countries (if not all) people with red green color blindness are unable to obtain an aircraft pilot's license?

你是否知道在很多国家(或许全部)，红绿色盲的人不可以申请飞行执照？

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According to the Colorblind Web Page Filter, above is what Google.com looks like for users with protanopia (red/ green color blindness).

参照色盲网页过滤器，其看起来像是Google.com为红色盲（红绿色盲）服务的。

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There are several types of color blindness, but the most common — an inability to distinguish red from green — affects 6 to 10 percent of men.

有许多类型的彩色色盲，但最普遍的——不能区分红色和绿色——影响百分之6到8的人。

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In a series of five studies, about 150 heterosexual men (homosexual men and those with red-green color blindness were excluded) rated photographs of women framed in red, white, gray, green, or blue, or with the woman in a red or blue shirt.

CNN: Wearing red may boost your sex appeal