Today on the Sensemaker podcast, Jonathan Lewis charts the dangerous rise of nitazene, and asks why the UK has become a hotspot for the extremely potent opioid

According to a King's College London report published last week the UK has been underreporting nitazene-related deaths by up to a third. Why has the UK become a hotspot for the extremely potent opioid?

Last week an illegal waste dump was found on the outskirts of Liverpool. It's believed to be one of the biggest of its kind ever found in the UK. But who is behind it? Writer: Jonathan Lewis Producer: Amalie Sortland Host: Ada Barumé Episode photography: Sofia Fenton  Executive Producer: Matt Russell

The Ambanis say they are rescuing animals from mistreatment

Why the rising cost of repaying student debt could become a big problem for the government?

Senior members slam internal investigations into misconduct claims, including alleged head-butting

The dating app Bumble built its identity on a promise: women make the first move. In this episode, The Observer uncovers a legal campaign by men's rights activists that helped dismantle that premise. Correction: A previous version of this episode stated that the Los Angeles Angels baseball case settled for $500,000. That case did not settle and was dismissed in court. It was a separate case involving the Oakland Athletics baseball team that settled for $500,000. This episode has been updated.

After three weeks of protest, the military has now seized power in Madagascar

Waymo plans to roll out its driverless taxi service in London by the end of this year. But there are still obstacles the company needs to overcome to put autonomous vehicles on the road.    Writer: Jonathan Lewis Producer: Amalie Sortland Host: Casey Magloire Episode photography: Joe Mee Executive Producer: Jasper Corbett

For global domination, the NFL must ensure the quality on the pitch matches the hype off it

The assisted dying bill could be thrown out if it is not passed in the House of Lords by the end of this parliamentary session. Why is it taking so long to be voted through?

Will the controversial founder of the Free Press website be the ogre that liberals fear?

Since the pandemic, online chess has seen an unprecedented rise in popularity. Now tensions are rising between new personalities and an old guard who want to protect the game's traditional format.

Row over ‘phoney’ Heathrow job continues as watchdog investigates claims that union failed to keep proper accounting records

This week, the government is expected to decide whether to approve plans for a new Chinese embassy in London. Critics warn it could be used for cyber attacks or as a base for espionage. Could it pose a threat to national security?

Union gave a Heathrow baggage handler a ‘ghost post’ and let him keep his first job, according to claim

Last week the US inverted its food pyramid, placing high protein foods like meat and dairy at the top. How did we get here and is this good food guidance?

A glance at earnings of the footwear giants shows how the battle over aerated footwear is changing

Elon Musk's AI chatbot Grok has been generating sexualised images of women and children on X. Can anything be done about it?

The US secretary of health’s policies, the rise of wellness influencers and a lack of doctors have caused a shift from traditional pharmaceuticals to other remedies

Donald Trump is facing an unexpected fallout as one of his most loyal supporters has resigned from Congress and turned against him. With divisions widening after the attack on Venezuela, is there a split in the broader MAGA movement?

China has started construction of what will become the world's largest hydropower dam in Tibetan territory.    Writer: Jonathan Lewis   Producer: Poppy Bullard   Host: Andrew Butler   Episode photography: Joe Mee   Executive Producer: Rebecca Moore  

In October reporter Hilary Andersson was selected to witness an execution by lethal injection in Oklahoma. Her assignment led her to the case of Tremane Wood, who had spent more than two decades on death row. This is the story of what happens to a man as he waits to die.

In October reporter Hilary Andersson was selected to witness an execution by lethal injection in Oklahoma. Her assignment led her to the case of Tremane Wood, who had spent more than two decades on death row. This is the story of what happens to a man as he waits to die.   Subscribe to The Observer: https://observer.co.uk/subscribe

Vantara claims to house more than 150,000 animals - that's 15 times the size of London Zoo.   Writer: Jonathan Lewis   Producer: Poppy Bullard   Host: Casey Magloire   Episode photography: Sofia Fenton   Executive Producer: Rebecca Moore  

The chancellor's statement was supposed to be a gamechanger, but turned out to be an exercise in political survival.

On Sunday, America announced that it had moved the world's biggest aircraft carrier within striking distance of Venezuela. Its addition to an already sizable fleet marks the biggest US military build up in the Caribbean since the Cold War.   

From Madagascar to Nepal, young people are leading protest movements that are shaking the foundations of power. What's fuelling this global wave of unrest – and can it lead to lasting change?  

Donald Trump has launched four lawsuits against major media organisations for up to $15 billion over the past year. This is the story of Trump's war on the media and the people driving it.  

Since Donald Trump's return to office, trans Americans are facing unprecedented legal and social threats - with some now seeking asylum abroad. But for those living in fear, the options for escape are limited.