Climate change and their impact on our planet

Sunlight in Clouds Creates Hidden Oxidants, Scientists Reveal Atmospheric Chemistry Breakthrough with Global Implications Hydroperoxides are powerful oxidizing agents that play a crucial role in atmospheric chemistry. An international research team, including scientists from the Leibniz Institute for Tropospheric Research (TROPOS), has now revealed that these compounds can also form from  α -keto acids such as pyruvic acid in clouds, rain and aerosol water when exposed to sunlight . The researchers estimate that these reactions could account for between 5 and 15% of hydrogen peroxide ( H₂O₂ ) observed in the atmosphere's aqueous phase. Published in Science Advances , the findings identify the photolysis of  α -keto acids  as a previously unrecognized source of atmospheric oxidants. Because such oxidation processes affect both the formation and breakdown of airborne particles and pollutants, the discovery has important implications for air-quality and climate modellin...

Climate Change Is Transforming the Arctic's Chemistry, Scientists Warm Climate change is reshaping the planet, with its most dramatic effects emerging at the polar regions. Researchers at Penn State have assembled a comprehensive overview of the chemical dynamics in the Arctic, identifying several independent interactions that influence atmospheric behaviour. As global temperatures rise and polar ice retreats, scientists are increasingly focusing on how chemical feedback loops accelerate Arctic warming. Similar climate-driven transformations and environmental tipping points are regularly explored on Earth Day Harsh Reality , which tracks the hidden mechanisms behind planetary change. Aircraft and Ground Data Reveal Powerful Chemical Interactions Drawing on data from two instrumented aircraft and ground-based measurements collected during a two-month campaign, the scientists compared chemical processes across two Arctic locations and North America's largest oil field with nearb...