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Science
Delhi world’s most polluted major city on eve of Diwali, Swiss group says
Delhi has been ranked as the most polluted major city by Swiss group IQAir just before Diwali. Authorities in India have implemented measures to reduce the impact of pollution during the festival.
Science
Is Mars still volcanically active? Scientists discover new clues beneath its surface
Scientists have detected unusual gas above cracks near a giant Martian volcano, raising the possibility that heat and volcanic activity may still exist deep beneath the planet's surface
