carbon dioxide

Mars: Perseverance rover measures speed of sound on Mars for the first time

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Using a laser to strike rocks and a built-in microphone, NASA’s Perseverance rover has measured changes in the speed of sound on Mars due to temperature affecting the atmosphere Space 9 March 2022 By Alex Wilkins An illustration of NASA’s Perseverance rover NASA/JPL-Caltech The speed of sound on Mars has been measured for the first … Read more

Photosynthesis: Global rate is increasing due to rising CO2 levels

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An analysis of plants at 68 sites around the world finds evidence that rates of photosynthesis have risen since the year 2000 Environment 28 February 2022 By Chen Ly Photosynthetic rates have risen in recent years Ryhor Bruyeu/Alamy Stock Photo Since the early 2000s, the growing level of carbon dioxide in the atmosphere has led … Read more

Ventilation in schools: Teachers are unsure of the best way to open windows in cold weather

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As school absences soar in England because of covid-19 – and classroom mask-wearing guidelines are lifted – many teachers aren’t sure how best to improve ventilation amid winter temperatures Health | Analysis 26 January 2022 By Jason Arunn Murugesu A primary school in England Chris Bull / Alamy S More than 350,000 carbon dioxide monitors … Read more