Air of authority: interview with Professor Catherine Noakes

Professor Catherine Noakes’ knowledge of ventilation and infection transmission has made her one of the government’s key scientific advisers on Covid-19. In recognition of her work, she was made an OBE last month. Alex Smith talks to her about the challenge of winter and the impact of infection control going mainstream

Tackling NOx from CHPs

Policies encouraging gas-fired CHPs in London are going into reverse. David Blackman looks at how new air pollution policies will affect the future of heat in the capital