The Day the Earth Caught Fire (1961)
When the U.S. and Russia unwittingly test atomic bombs at the same time, it alters the nutation (axis of rotation) of the Earth.
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Val Guest
Val Guest began his career as an actor on the British stage and in early sound films. He ran the one-man London office of "The Hollywood Reporter" until an encounter with director Marcel Varnel led to a screen writing job at Gainsborough Studios. Guest's directing career began in the early 1940s with a Ministry of Information short about the perils of sneezing, an inauspicious start to a lengthy roster of films that includes the science-fiction classics The Quatermass Xperiment (1955), Quatermass 2 (1957), The Abominable Snowman (1957) and The Day the Earth Caught Fire (1961). He was married to the actress Yolande Donlan from 1954 until his death in 2006, aged 94.