methane hydrates methane hydrates methane clathrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates the Wiki entry methane hydrates methane hydrates methane hydrate methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates methane hydrates Methane hydrates methane hydrates