A 16-YEAR-OLD teenager has tragically drowned after   jumping into the ocean to help his friend, who had slipped off rocks at Browns Beach on the Yorke Peninsula.AT least 17 children aged five and under have been exposed to dangerous levels of nicotine in e-cigarettes or vaping ­liquidsMORE than 10,000 South Australian jobs could be lost this week in the wake of JobKeeper ending yesterday, the state Opposition has warned.ADELAIDE claimed top spot on the ladder and made an AFLW statement after conquering previous league leader Collingwood at Norwood Oval on Saturday.