Burying their heads in the sand -- protesters say that's been the attitude of the Australian government on climate change.<br/> <br />Leaders from the world's major economies are arriving to attend the G20 summit, so hundreds on Bondi beach grabbed the opportunity to demand a limit on carbon emissions.<br/> <br />(SOUNDBITE) (English) UNIDENTIFIED PARTICIPANT IN PROTEST SAYING:<br/> <br />"It's a critical issue and Australia is well off the pace on climate change, so every little bit of action like this helps."<br/> <br />...But it's not the only demonstration in town.<br/> <br />In Brisbane, where the summit's held, caricatures of leaders from the U.S., Germany and the UK draw attention to the widening gap between the rich and poor.<br/> <br />The stunt's been organised by anti-poverty campaigners from Oxfam.<br/> <br />(SOUNDBITE) (English) OXFAM AUSTRALIA CHIEF EXECUTIVE, DR HELEN SZOKE SAYING:<br/> <br />"So our depiction of the lifesavers here today is the gentle respectful message please don't take your eye off the gam