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An aerial view of the derailment in Ohio on 8 February

Environment

Ohio train derailment: What we know about the toxic chemical spill

A train derailed and caught fire in eastern Ohio, releasing hazardous chemicals into the air, soil and water – and raising concerns about health effects for residents

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Loofahs are used as sponges

Chemistry

Loofah-inspired gel purifies contaminated water with warmth of the sun

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Three smokestacks from a coal-burning power plant send up plumes of white smoke into a blue sky

Environment

US megadrought has led to more air pollution from power plants

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Part of the setup for creating medium density amorphous ice

Physics

Entirely new type of ice made using extremely cold steel balls

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A water engineer uses copper divining rods to trace the course of an underground pipe

Environment

Two of the UK's water companies are still using dowsing to find leaks

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Google data centre

Technology

Google has finally revealed how much water its data centres use

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A vehicle travels along a flooded street after

Environment

How California can capture stormwater to fight off the drought

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Microplastic pollution of the sea

Chemistry

Trapping powder quickly removes all microplastics from water

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One of the mussels gathered in the 2020 survey on the river Thames

Environment

Mussel numbers in the river Thames have dropped by up to 99 per cent

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WXFHW9 Man watering green lawn, sprinkling water on the grass with water pistol, close-up with no face

Environment

When water runs short, how do you get people to use their fair share?

Droughts are expected to become more common and more severe due to climate change, affecting the water supply we all rely on. Making sure there's enough to go around will require significant changes – including to our individual habits

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Environment

8 things you can do right now to cut back your water use

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Space

The hunt for habitable ocean worlds beyond our solar system

Features

Environment

California has lost more groundwater than held in all its reservoirs

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Technology

How much water do data centres use? Most tech companies won't say

Insight