Subject: Environment Context: Plastic from used personal protective equipment (PPE) can be transformed into renewable liquid fuels, according to a new study in the journal Concept: PPE waste to be converted into fuel using chemical a process called pyrolysis. This breaks down plastic at high temperature – between 300-400°C for an hour – without oxygen. […]

Subject: Environment Context: Supreme Court has directed two smog towers should be installed in the capital by April on a pilot project basis. But the deadline is not met. Concept: A smog tower is a structure designed to work as a large-scale air purifier, fitted with multiple layers of filters which trap fine dust particles […]

Subject: Environment Context: Draft environment impact assessment 2020 included list of projects into Category B2. Concept: All projects and activities are broadly categorized in to two categories – Category A and Category B, based on the spatial extent of potential impacts and potential impacts on human health and natural and manmade resources. All projects or […]

Subject: Environment Context: In a study, researchers predict that by 2100, the global population potentially exposed to episodic coastal flooding will increase from 128-171 million to 176-287 million. Findings: Sea-level rise (SLR) is a “well accepted” consequence of climate change. Globally, of the 68 per cent area that is prone to coastal flooding, over 32 […]

Subject: Environment Context: High levels of ammonia were detected in the Yamuna river. Concept: The level of ammonia in raw water of Yamuna river was 1.8 parts per million (ppm) but the acceptable maximum limit of ammonia in drinking water, as per the Bureau of Indian Standards, is 0.5 ppm. Ammonia is a colourless gas […]