The World Today

Figures from Australian Institute of Health and Welfare show there were 22,700 weight loss surgeries in the 2014-2015 financial year. This is a massive increase on the figures from 10 years before, where fewer than 10,000 people underwent the same procedures.

Scientists say they're amazed by new observations of Jupiter, which show a violent environment beset with massive cyclones and storms, huge torrents of ammonia gas, heavy gravity and intense heat and pressure. The images were captured last year by NASA's Juno space probe, but only now has the scientific data has been published and presented to an excited scientific community.

A rocket, partly made of carbon fibre, has launched into space from a remote site in New Zealand. The company behind it wants to take a slice of the booming market for launching small satellites into orbit. But the spacecraft by American-New Zealand company Rocket Lab didn't reach the height that it hoped for.

British police have now arrested seven people they suspect of being linked to the deadly concert bombing in Manchester. One of those is the older brother of the alleged suicide bomber, Salman Abedi. His father and younger brother have also been arrested in Libya. But Investigators are warning that they fear Abedi was part of a much bigger network. And they say they're racing against time to catch all those behind the attack.

Australia's High Commissioner to the United Kingdom, Alexander Downer, has issued a warning to Australians in Britain to avoid crowded events like football matches. Mr Downer had just been briefed by British intelligence agencies. He said the Manchester bomber was not a 'lone wolf', but had connections to several terrorist groups. The sophistication of the bomb also suggests he had had some training.

Two suicide bombers blew themselves up, minutes apart, at a busy bus terminal in Jakarta last night, killing three police officers and injuring around a dozen people. Police say they were on alert for a terrorist incident because of the Manchester attack.

Indonesia's drugs enforcement agency is now calling for Australian drug trafficker, Schapelle Corby, to remain in jail to prevent her from re-joining a narcotics syndicate. Corby is due to be deported on Saturday, almost 13 years after she was first jailed.

ME Bank chief executive Jamie McPhee says the 'too big to fail' status held by Australia's major banks is outdated. Mr McPhee told The World Today that the implicit government guarantee for the Big Four banks puts second tier banks at a competitive disadvantage. Mr McPhee told the ABC's Peter Ryan that a royal commission into banks might be necessary but only if self-regulation fails.

The Federal Government is examining whether to change the rules on how and when the military can be called in to deal with a terrorist hostage situation, like the Lindt Cafe siege. The Attorney General says he will be closely studying the coroner's findings into that aspect of the handling of the siege.

A contractor working on the National Broadband Network says he fears an installer could die during the rollout because of lax safety standards. The whistleblower says he's expected to work alone in remote areas and has been told if he falls off a roof - it would be up to sometimes elderly property owners to rescue him. He also says the project is riddled with inefficiencies.