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The conflict between the brain's expectation of Earth's gravity and the reality of no gravity causes space motion sickness.

It is easy to be cynical about the annual circus of UN climate negotiations that takes place at “Cop” – the Conference of the Parties to the UN’s climate convention.

Global emissions need to peak this year to stay within 1.5°C of global temperature rise since pre-industrial levels. This means that starting now, countries need to emit less greenhouse gas. Emissions also need to be cut in half by 2030 to prevent the worst effects of climate change.

Hours before Hurricane Melissa roared towards Cuba’s second-largest city, Santiago de Cuba, the island’s president, Miguel Díaz-Canel, announced that 735,000 people had been evacuated – one in every 15 Cubans. The storm had already smashed into Jamaica, the most powerful to ever strike the island, causing landslides, power failures and…

Ten years after the world agreed on an historic framework for climate action, the very features that made the Paris agreement possible are now holding it back. Designed to foster cooperation, it has instead become a system for forging agreement rather than delivering change.

This year’s UN climate summit (Cop30) in Belém, Brazil, begins with a familiar dilemma: how can we tackle a highly political, long-term problem that involves every country of the world?

Ukrainians have always felt closely tied to their land, often expressing this through literature and folktales. But these connections have grown even stronger since the country was invaded by Russia in 2022.

Professor Nishan Canagarajah, Vice-Chancellor of the University of Leicester, is to step down as Chair of The Conversation Trust UK’s Board of Trustees at the end of 2025, after four years in the role.

For two weeks during November, countries are coming together in the city of Belém in Brazil to negotiate their responses to climate change. This will be the 30th UN climate summit, known as Cop30. It marks ten years since the negotiation of the Paris agreement (a global agreement to keep…