Opposition education spokeswoman Kate Ellis claims Tony Abbott and Christopher Pyne have announced $30 billion in cuts to Australian schools.

Prime Minister Tony Abbott claims every Australian household will benefit by $550 a year if the carbon tax is axed.

The Australian federal system has adapted and changed since 1901 with the balance of power and responsibilities shifting between the States and the Commonwealth. Council of Australian Governments Chair John Brumby gives his view of the strengths and weaknesses of the federal system.

Opposition spokeswoman for health Catherine King claims the budget cuts a "whopping" $50 billion from Australia's public hospitals.

With the evidence mounting that concussion is linked to long term brain injuries, contact sports right around the world are on watch. However, the AFL's expert concussion group has consistently attacked the growing evidence, accusing scientists of dodgy research and fear mongering.