First of all you are trying to use content from BBC site. I'm sure they've copyrighted their stuff up to wangyangs, so be careful. What is the problem? I've copied your iFrame code and it worked in Chrome, Opera and Firefox. What browser are u using? do u have the latest versions of the software, maybe your iFrame is too big for your screen. Just throwing some suggestions out there. One suggestion is to replace
HTML Code:
<iframe src="http://www.bbc.co.uk/sn/hottopics/climatechange/climate_challenge/index_1.shtml" width="1000" height="900" frameborder="10"></iframe>
with
HTML Code:
<iframe src="http://www.bbc.co.uk/sn/hottopics/climatechange/climate_challenge/cc.swf" width="1000" height="900" frameborder="10"></iframe>
That way you won't get the entire page, just the flash game. I would also suggest making your iFrame smaller. Hope this helps