404. That’s an error.
The requested URL /~r/powerlineblog/livefeed/~3/6561zEOj4YY/global-warming-no-so-fast.php was not found on this server. That’s all we know.
/~r/powerlineblog/livefeed/~3/6561zEOj4YY/global-warming-no-so-fast.php