Exclusive: Catherine Howard’s exit comes amid disagreements at top of government about how far to push deregulation agenda

Rachel Reeves’s attempts to overhaul Britain’s planning laws have been dealt a blow after a senior lawyer whom she appointed as an adviser decided to leave the government after just four months.

Catherine Howard will leave the Treasury when her contract ends on 1 January, despite having been asked informally to stay on indefinitely.

In this week’s newsletter:​ The government’s bid to speed up nuclear construction could usher in sweeping deregulation, with experts warning of profound consequences for nature

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When UK prime minister Keir Starmer announced last week that he was “implementing the Fingleton review”, you can forgive the pulse of most Britons for failing to quicken.

But behind the uninspiring statement lies potentially the biggest deregulation for decades, posing peril for endangered species, if wildlife experts are to be believed, and a likely huge row with the EU.

2025 ‘virtually certain’ to be second- or third-hottest year on record, EU data shows

Just 0.001% hold three times the wealth of the poorest half of humanity, report finds

‘Even the animals seem confused’: a retreating Kashmir glacier is creating an entire new world in its wake

Scientists say bears in southern Greenland differ genetically to those in the north, suggesting they could adjust

Changes in polar bear DNA that could help the animals adapt to warmer climates have been detected by researchers, in a study thought to be the first time a statistically significant link has been found between rising temperatures and changing DNA in a wild mammal species.

Climate breakdown is threatening the survival of polar bears. Two-thirds of them are expected to have disappeared by 2050 as their icy habitat melts and the weather becomes hotter.

Exclusive: Use of toxic plastic beads in treatment works is unnecessary and outdated, say conservationists

The use of tiny, toxic plastic beads at sewage works should be banned nationwide, an MP and wildlife experts have said after a devastating spill at an internationally important nature reserve.

Hundreds of millions of “biobeads” washed up on Camber Sands beach in East Sussex last month, after a failure at a Southern Water sewage treatment works caused a catastrophic spill. It has distressed and alarmed local people and conservationists, as not only are the beads unsightly but they pose a deadly threat to wildlife.

Keeping reindeer in pens for public enjoyment can cause them physical and mental harm, charities warn

With their fluffy coats, big brown eyes and reputation as Santa’s helpers, reindeer are a common and popular attraction at Christmas markets around the UK.

But being stuck in a pen and approached by hordes of adoring fans is harming the mental and physical health of Rudolph and his brethren, animal charities have warned.