News stories about the climate crisis often contain mentions of greenhouse gases, and the greenhouse effect. Whilst most will find the analogy easy to understand, what exactly are these gases, and why are they contributing to the warming of the Earth?

UN report warns of reprisals against those who collaborate in defence of human rights
Gaza: At least 20 killed in deadly building collapse, search for survivors continues
AI, climate and conflicts top Guterres’s agenda ahead of General Assembly
Security Council LIVE: ‘Being a woman is a crime in Afghanistan,’ civil society briefer declares
Repression continues in Venezuela in the face of ‘appalling’ human rights violations
World News in Brief: Shipping alert from IMO, democracy vanishing in Nicaragua, alert over political ‘denialism’