Good Morning Australia! - A surprise move from Greece's Prime Minister - Jimmy Carter reveals he has brain cancer - Climate scientists have alarming news about global temperatures - And more in your CareerSpot Global News Briefs:

Greek Prime Minister Alexis Tsipras announced he is stepping down to allow a snap election on whether to continue his program.  Tsipras faces a rebellion within his ruling Syriza party that came into power on a mandate to resist and refuse anymore European-imposed austerity, only to have Tsipras agree to more painful public sector cuts, including pension reform.  The poll could take place as early as 20 September.

Macedonia has declared a state of emergency on its southern border with Greece over the European Refugee Crisis.  It will allow authorities to deploy troops to deal with migrants crossing over from Greece.  People from the Middle East and sub-Saharan Africa who wash up on Greece's southern islands typically journey northward, following a path through Macedonia to Serbia and Hungary, which is already erecting a border fence to halt the flow. 

A young female asylum seeker finally will be treated in hospital in Australia after being sexually assaulted in the camp at Nauru.  The crime happened in May, and her family says the 23-year old has twice attempted suicide.  Greens senator Sarah Hanson-Young says waiting three months to help this young woman is unacceptable, and the transfer should have occurred immediately after the crime.

Thailand has cleared two men seen on video at the Erawan Shrine in Bangkok standing close to the main suspect in the bombing that killed more than 20 people.  It turns out that the men were a tourist and his guide.  The man in the yellow shirt who left the backpack at the exact point where the explosion occurred is still sought by authorities, although they haven't put a name to the face.  And they're still not sure if the man, who reportedly spoke an unidentified foreign language, is still in the country.

Burundi President Pierre Nkurunziza held a surprise swearing-in ceremony for himself, far ahead of schedule.  Nkurunziza's bid for a third term in ofice was called unconsitutional by opponents who boycotted the election, and sparked weeks of bloody unrest in the tiny, impoverished African nation.

Former US President Jimmy Carter gave greater details about his battle with cancer, telling a news conference that his aggressive melanoma has spread to his brain.  The 39th American President immediately entered radiation treatment at Atlanta's Emory University Hospital, and will also be treated with a new, recently-approved cancer drug called pembrolizumab, which is marketed under the tradename Keytruda.  It boosts the body's immune system to fight tumors.

Jimmy Carter says no matter what happens, "It's in the hands of God," and that he'd "be prepared for anything that comes".  But he has one wish, and that is that the Guinea Worm dies before he does.  The 90-year old has spent the decades since his presidency leading eradication efforts (as well as building homes for the poor and in developing nations, negotiating peace treaties, and overseeing democratic elections).  Guinea worm is a debilitating parasitic disease that in the mid-1980s used to infect millions of people in the developing world, causing blindness.  But thanks to the work of the Carter Center, there were only 17 cases of guinea worm counted in the first five months of 2015, a stunning public health victory.

Last month was the Earth's hottest July ever.  The global average temperature was 16.6 C degrees - that was 0.08 degrees hotter than the previous record, which to climate scientists is a significant deviation.  Scientists at the US National Oceanic and Atmospheric Administration (NOAA) said in a report that they expect 2015 to be the hottest year on record.