Information at a look | Science

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Summary

In scientific news around the world, despite previous safety concerns, Brazilian health officials decide to allow imports of Sputnik V, the Russian-made vaccine against the pandemic coronavirus. One strategy to combat dengue fever with bacteria-armed mosquitoes has passed their toughest test to date: a randomized controlled trial in Indonesia. In its first year of observation, a radio telescope in British Columbia discovered 535 rapid radio flashes – strong flashes of radio waves from space – that is more than three times as many as previously known. Atmospheric carbon dioxide hits 419 parts per million despite pandemic lockdowns, the highest level in 63 years of modern records.