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The US has unveiled a bold emissions target by the end of this decade at the Climate summit. This new target, which will be unveiled at a virtual summit of 40 global leaders, essentially doubles their previous promise.
Long: India records the world's highest ever daily increase in Covid-19 cases amid shortage of oxygen in hospitals; and NASA's Perseverance rover produces pure oxygen from the atmosphere of Mars.
(Photo: U.S. President Joe Biden removes his face mask to speak about the status of coronavirus disease. Credit: Reuters.)