Thursday briefing: Is your body really full of microplastics?

In today's newsletter: Numerous studies have found evidence of microplastics in the human body and warned of the risks to our health. But in the race to research this new field scientists may have drastically overstated the dangers

Good morning. Microplastics are everywhere. They have been found at the top of Mount Everest and in the deepest ocean trenches. They are in our food, our water and the air we breathe.

For a while, research suggested they were inside us too. Studies reported microplastics in our cells, brains, placentas and testicles.

Iran | Donald Trump has said he has been assured the killing of protesters in Iran has been halted, adding that he would watch it and see" about threatened US military action, as tensions appeared to ease on Wednesday night.

Greenland | Donald Trump reiterated on Wednesday that the US needs Greenland and that Denmark cannot be relied upon to protect the island, even as he said that something will work out" with respect to the future governance of the Danish overseas territory.

UK news | Three Palestine Action-affiliated prisoners have announced the end of their hunger strike after the government decided not to award a 2bn contract to the Israeli arms company subsidiary Elbit Systems UK - with another four who had paused their protest choosing not to continue.

Digital ID | The chancellor, Rachel Reeves, has insisted that she is pretty relaxed" about what form of digital ID people use to prove their right to work in the UK, amid criticism of the government's latest U-turn.

Ukraine | Anti-corruption investigators have accused the former Ukrainian prime minister Yulia Tymoshenko of plotting to bribe MPs, including some from Volodymyr Zelenskyy's party, in a bid to undermine him.