Between 1940 and 1996, the U.S. spent at least $8.75 trillion in present-day terms on nuclear weapons development, including platforms development (aircraft, rockets and facilities), command and control, maintenance, waste management and administrative costs.he United States is one of the five nuclear weapons states permitted to maintain a nuclear arsenal under the Nuclear Non-Proliferation Treaty, of which it was an original drafter and signatory on 1 July 1968 (ratified 5 March 1970).
Although there are several forms of colour blindness, as Aaron Priven noted, the inability to distinguish red from green (red/green colour blindness, natch) is the most common condition. Probably around 5% of men in North America are red/green colour blind (compared to less than 1% of women).
Each cone interprets only one color-red, green or blue. Color blindness, also known as color vision deficiency, is the inability to distinguish colors and shades or to recognize them at all. It occurs when the color-sensing cones of the retina are absent or do not function properly. About 8 percent of males and 1 percent of females are color-blind to some degree.