Issue # 303 _ May 2021
Cover
- Education at risk
- Prolonged school closings and unequal access to distance learning is causing increased student dropouts and learning-acquisition gaps By Christina Queiroz
- In search of improvement
- Investing in the training of teachers and the sharing of knowledge between schools helps improve student performance By Christina Queiroz
COVID-19
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All eyes on ButanVac
New vaccine candidate uses a more stable version of the spike protein
By Marcos PivettaGood practices
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Trust and transparency
Studies focus on conflicts of interest in medical science
By Fabrício MarquesBiology
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The colors and songs of evolution
Varying plumage hues and song patterns lead to the formation of new species in certain bird groups
By Marcos Pivetta and Eduardo Geraque