Half of world’s CO2 emissions come from just 32 fossil fuel firms, study shows

Critics accuse leading firms of sabotaging climate action but say data increasingly being used to hold them to account

Nearly 400 millionaires and billionaires call for higher taxes on super-rich

Mark Ruffalo, Brian Eno and Abigail Disney sign letter timed for WEF in Davos saying wealthy are buying political influence

Trump has growing stranglehold over EU and UK energy supply, study shows

European countries now reliant on US liquified natural gas shipments, creating risk of higher bills amid recent tensions

A stooge in the US Fed could blow out inflation in Australia – but Trump is unlikely to get his way

Global consequences likely to be severe if the president is able to take control of US central bank

Netflix sweetens Warner Bros bid with all-cash offer to block Paramount

Streaming company says proposal speeds up completion and allows WBD investors to vote as soon as April

Wall Street sees worst day since October after Trump tariff threats

Sell-off hits US stocks in first trading day since president threatened tariffs against eight countries

Nervous rex: the Davos elite brace for Trump and his dinosaur diplomacy

Leaders of EU, France and Canada stake out positions on Greenland ahead of US president’s speech to World Economic Forum

The Guardian view on food security: Britain can no longer trust markets alone

Editorial: As climate and geopolitics shocks bite, countries are rebuilding food buffers. The UK clings to neoliberal ideas while households pay the price

The UK government’s retreat from Carillion audit reforms is feeble

Eight years after systemic flaws were exposed, ministers have abandoned their long-promised overhaul in favour of another ‘pro-growth’ nod

Europe condemns Trump’s ‘new colonialism’ as Greenland crisis grows

US president says there is ‘no going back’ on goal of controlling Arctic territory as Emmanuel Macron leads European resistance

Davos: Reeves urges leaders to keep cool heads over tariff threat; Canada’s Carney stands with Greenland – as it happened

Rolling coverage of the World Economic Forum in Davos, where European Commission president says Europe must respond to geopolitical shocks

Nandy intends to refer Daily Mail’s Telegraph takeover to regulators

Culture secretary ‘minded to’ intervene and ask Ofcom and CMA whether the £500m deal harms media plurality

Water winners: who will gain from the industry’s spending spree in England and Wales?

As Labour shakes up regulation, suppliers are finally investing – but face problems such as contractor shortages and inflation

Elon Musk floats idea of buying Ryanair after calling CEO ‘an idiot’

Tesla boss clashed with Michael O’Leary when airline boss rejected installing Starlink technology on aircraft

Donald Trump trashed global economic orthodoxy. A year on, did he leave Australia a winner or loser?

While tariffs have been ‘all show and no substance’, economists fear an AI investment bubble and tensions in the South China Sea, along with Trump’s attacks on the Federal Reserve’s independence