• Cyclone Ditwah: Sri Lanka issues fresh landslide alerts as heavy rains batter island; death toll 618
• Groundwater recharge sees marginal increase this year
• Delhi schools postpone all outdoor sports activities due to high AQI levels and severe pollution warnings
• ‘Delhiites facing life-threatening situation’: 10 reasons why Delhi is in a pollution health emergency
• New research measures how much plastic is lethal for marine life