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 _    _      ___     _____       ___     _    _   
| \  / ||   / _ \\  |  __ \\    / _ \\  | \  / || 
|  \/  ||  / //\ \\ | |  \ ||  / //\ \\ |  \/  || 
| .  . || |  ___  ||| |__/ || |  ___  ||| .  . || 
|_|\/|_|| |_||  |_|||_____//  |_||  |_|||_|\/|_|| 
`-`  `-`  `-`   `-`  -----`   `-`   `-` `-`  `-`

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Text this: Stringy instability of topologically non-trivial AdS black holes and of de Sitter S-brane spacetimes