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Air condition system facility outdoor units heat pump on roof of building

Technology

Heat pump uses a loudspeaker and wet strips of paper to cool air

A prototype heat pump that uses water and sound to cool is three times as efficient as previous comparable designs

TOPSHOT - A deforested and burnt area is seen on a stretch of the BR-230 (Transamazonian highway) in Humait??, Amazonas State, Brazil, on September 16, 2022. - According to the National Institute for Space Research (INPE), hotspots in the Amazon region saw a record increase in the first half of September, being the average for the month 1,400 fires per day. (Photo by MICHAEL DANTAS / AFP) (Photo by MICHAEL DANTAS/AFP via Getty Images)

Environment

COP15 target to reverse biodiversity loss by 2030 is ‘unrealistic’

Delegate sleeping at COP27

Environment

COP27: Absence of clear vision stalled progress at climate conference

Climate protestors

Environment

What are climate summits actually for, and how can we make them work?

Indigenous women embracing

Environment

Countries agree to create climate damage fund in historic COP27 deal

Luiz Inacio Lula da Silva speaking at COP27

Environment

COP27: Brazil’s Lula promises zero deforestation in the Amazon by 2030

Tree stumps

Environment

Crucial Congo rainforest faces growing threats from logging and mining

US president Joe Biden and Egyptian president Abdel Fattah El-Sisi meet in Sharm El Sheikh on 11 November

Environment

Climate negotiations are in disarray as COP27 enters its second week

People walking through floodwater

Environment

What is ‘loss and damage’ and how is it informed by climate science?

Joe Biden speaking at COP27

Environment

Biden urges leaders to fight for an equitable world at climate summit

US president Joe Biden called on other nations to produce tougher plans to cut carbon emissions at the COP27 climate summit in Sharm El Sheikh, Egypt

Environment

Global fossil fuel emissions set to rise by 1 per cent in 2022

Environment

When water runs short, how do you get people to use their fair share?

Environment

US midterms produce mixed results for environmental action

Environment

Tackling population growth is key to fighting climate change