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Falling

World

Falling test scores in schools startle EU countries: Why are standards going down?

It has been dubbed "the PISA shock". Countries that had been used to their school pupils performing well in test scores are seeing a plunge in standards. The PISA test is an international assessment led by the Organisation for Economic Co-operation and Development (OECD), which measures how well 15‑year‑olds in over 80 countries apply reading, mathematics and science skills to real‑world problems. In the latest rankings, France's results were the worst it has ever had, and Germany's school pupils got their worst PISA report card too.

Weather

Weatherwatch: Cleaner clouds may slow rate of global heating

Study shows falling dust levels are making clouds more reflective, an effect not taken into account in climate models Cleaner clouds are helping to slow the rate of global heating, a study shows. Falling levels of dust in the atmosphere are making clouds more reflective. This previously unidentified effect is not being taken into account by current climate models, which may mean they are slightly overestimating the projected rate of global heating. Researchers analysed satellite observations of high clouds in the northern hemisphere and assessed the ratio of ice crystals to liquid droplets ove