4ZZZ launched its glorious tradition of counting down listeners' 100 favourite songs on New Year's Day 1977. More than 10 years later, 2JJJ in Sydney (which employed many ex-Zed staff) began conducting its own Hot 100. Because 4ZZZ held the rights to the name Hot 100, there was a little bit of legal biffo when TripleJ became a national broadcaster, so they changed the name of their survey to the "Hottest 100".
Twenty one Coptic Christians killed by IS
Egypt's National Defense Council met in an emergency session following the release of the violent footage, which shows the group dressed in orange overalls being forced to the ground and decapitated.
IS have claimed to have carried out several attacks in Libya; but several armed groups are operating in the country which effectively has no government, making it unclear how much power IS wields in the North African nation.
Libya currently has two rival governments based in Tripoli and Tobruk whilst the eastern city of Benghazi, headquarters of the 2011 Arab Spring revolution, is now held by Islamist fighters linked to al-Qaeda.
Egypt has declared seven days of national mourning.