Messages based on disgust reduce the appeal of meat by decreasing enjoyment and moral detachment, driving consumers towards a plant-based diet, a study finds. By Patrizia Catellani

Urban heat is a public health emergency, an infrastructure challenge and a climate crisis rolled into one. To safeguard cities and their most vulnerable populations, India needs city-level cost-effective long-term mitigation strategies. By Sanjay Seth and Yatin Choudhary

Transgender Australians risk being caught in the crossfire if politicians turn issues that hardly affect most people into supposed threats to broader society. By Dr Tariq Choucair, Katherine M. FitzGerald, Lucinda Nelson

In India, current frameworks for defining urban areas relies on the subjectivity of bureaucracy and archaic metrics such as the distribution of the male workforce. A more accurate definition will enable better targeting of resources. By Reetika Syal and Tarun Arora