Four Corners investigates Australia's lobbying industry, where top operators reveal how they win access to ministers, as critics say lax regulation leaves the system open to undue influence.

Anne Connolly investigates the government's new "once-in-a-generation" aged care reforms - finding families waiting in limbo and a secretive algorithm that experts say often gets funding wrong.

President Trump's escalating campaign to pressure the "fiercely independent" Federal Reserve and Jerome Powell into cutting interest rates threatens the central bank's autonomy, with ramifications reaching far beyond the US.

In the second part of this major Four Corners investigation, Adele Ferguson follows food supply chains from cocoa farms in West Africa to fruit farms in Australia, exposing the hidden human cost behind everyday food items.

Can Australians trust the labels on the food they buy? In Part 1 of a major two-part Four Corners investigation, Adele Ferguson teams up with forensic food scientists to examine the integrity of Australia's food supply.

From IV drip bars to recovery studios to plush longevity clinics and online biohacking, the longevity industry is booming. Dr Norman Swan examines whether the race to slow aging is outpacing the science.

Australia has been promised a solution to the housing crisis: affordable rentals delivered with private developers, public money and big investors. Four Corners investigates whether affordable housing is really affordable.

As artificial intelligence reshapes modern warfare, Four Corners investigates how AI-powered targeting systems are changing battlefield decisions from Ukraine to Gaza, and what this means for the future of conflict.

As the AFL pushes for growth, Four Corners uncovers startling new evidence of brain disease in younger players. Families of players diagnosed with CTE speak out about the risks of repeated head trauma, and whether the AFL has been transparent about the risks.

As native forest logging ends in some states, we investigate where the industry is heading next. Jessica Longbottom examines the flow of timber across state borders and the growing battle over the future of native forestry.

Escaping Kabul tells the dramatic story of the secret international mission to rescue Afghanistan's female cyclists after the Taliban's return to power placed them in grave danger.

Artificial intelligence is already changing how we live and work, while being sold as the technology that could cure disease, transform productivity and solve some of the world's biggest problems. Steve Cannane investigates the race to build ever more powerful AI systems and asks whether it is moving faster than governments and communities can keep up with.

A confronting Four Corners investigation into alleged police misconduct in NSW and the hidden accountability system accused of failing victims and the public. We ask, when police abuse their power, who holds them to account?

It's the world's largest mining company and a national success story. But BHP is also one of the country's biggest greenhouse gas emitters. For years it's promised to act on climate change by cutting its massive diesel use. But leaked documents show BHP's words haven't always matched its actions.

A look at Donald Trump's immigration crackdown, from high-profile ICE raids to the death of activist Renee Nicole Good in Minneapolis, exploring questions around civil liberties, accountability and who is being targeted.

The Salvadoran president's deal with Trump to imprison deportees, and what each stood to gain. With reporting from the news outlet El Faro, President Nayib Bukele's tangled history with the gangs the US says it is fighting.

Tasers are meant to be a safer way for police to stop dangerous situations, without taking a life. But people are still dying. When something goes wrong after a taser is used, who decides what actually happened?

After four years of war, in Russia there is close to zero public opposition to Putin's invasion of Ukraine. But a few are prepared to speak out.

Four Corners unveils Australia's first comprehensive national map of Adult Attention Deficit Hyperactivity Disorder (ADHD), revealing stark differences by location. Dr Norman Swan reports.

Whistleblowers from the social media giants reveal how their companies deliberately built a business model powered by outrage and division, paving the way for radicalisation, real-world violence and fractured societies.

As the US bombards Iran, sparking region-wide conflicts and unleashing a global economic crisis, Four Corners interrogates one of President Donald Trump's key reasons for war: Did Iran pose a nuclear threat?

Australian universities are in turmoil. Deep cuts to jobs and courses are triggering fury on campuses. Steve Cannane investigates how years of shrinking public funding, rising debt and increasingly corporate decision-making have pushed some unis to breaking point.

Wealthy tech titans Peter Thiel, Elon Musk and David Sacks were instrumental in Trump's rise to power and now hold sway far beyond Silicon Valley. How did they accumulate such unprecedented influence? Who's really in control?

South Australia's algal bloom is one of the worst environmental disasters in Australian waters, continuing to devastate parts of the coastline. What did the government know about the health risks and what was the public told?

How a prominent Melbourne gynaecologist carried out repeated laparoscopic surgeries that senior specialists describe as unnecessary and harmful. Louise Milligan examines how complaints, warnings and red flags were ignored.

The Liberal Party is hurtling towards a reckoning. This isn't just a battle that will decide who leads the Liberal Party; it's a battle for the party's identity, and direction. Patricia Karvelas takes you inside the contest that will shape the future of the Coalition.

Four Corners' two-part special on the Bondi massacre continues with Sean Rubinsztein-Dunlop's investigation into the secret lives of the terrorists, uncovering astonishing new information leading up to the attack.

A powerful two-part special on the Bondi massacre. Mark Willacy brings the definitive account of what happened on that December day, as told by the people who were there, survivors of the attack and families of those killed.