TIL: Titanium used for Mach3+ Cold War spy plane came from Russia

[caption id="attachment_785663" align="aligncenter" width="600"] Image: Nasa[/caption] In a fascinating piece about the SR-71 Blackbird, the BBC calls it The Cold War's ultimate spy plane. The Blackbird is the world's fastest plane capable of speeds reaching 2,200mph (3,540kph) while its futuristic...