DAILY CURRENT AFFAIRS IAS | UPSC Prelims and Mains Exam – 18th March 2024
Archives (PRELIMS & MAINS Focus) Democratic Republic of the Congo Syllabus Prelims – Geography Context: Over the past few weeks, many have died and hundreds of thousands displaced after the fighting between the Congolese army and Rwandan-backed M23 rebel group escalated. Background:- The growing tensions between Congo and Rwanda, which has been accused of supporting the rebels, have not only increased the risk of an all-out conflict but also pose a threat to food security for millions. About Democratic Republic of the Congo The Democratic Republic of the Congo is a country in Central Africa. By land area, the DRC is the second-largest country in Africa.The country has a 25-mile (40-km) coastline on the Atlantic Ocean but is otherwise landlocked. It is named after the Congo River, which flows through the country.The national capital and largest city is Kinshasa. The country is often referred to by its acronym, the DRC, or called Congo (Kinshasa), with the capital added parenthetically, to distinguish it from the other Congo republic, which is officially called the Republic of the Congo and is often referred to as Congo (Brazzaville). The country is bordered by the Republic of the Congo, Central African Republic, South Sudan, Uganda, Rwanda, Burundi, Tanzania (across Lake Tanganyika), Zambia, Angola and the South Atlantic Ocean. The Democratic Republic of the Congo is extremely rich in natural resources (It boasts vast deposits of industrial diamonds, cobalt, and copper) but has suffered from political instability, lack of infrastructure, corruption, and centuries of both commercial and colonial extraction and exploitation. Congo River The Congo River , formerly also known as the Zaire River, is the second-longest river in Africa, shorter only than the Nile, as well as the third-largest river in the world by discharge volume, following the Amazon and Ganges rivers. It is the world’s deepest recorded river, with measured depths of around 220 m. It is the only major river to cross the Equator twice. The river and its tributaries flow through the Congo rainforest, the second largest rainforest area in the world.It drains into the Atlantic Ocean. Source: The Hindu Ethanol 100 or E100 Syllabus Prelims – Current Event Context: Shri Hardeep Singh Puri, Union Minister for Petroleum & Natural Gas and Housing and Urban Affairs, launched ‘ETHANOL 100. Background: ETHANOL 100 fuel has the potential to transform our transportation sector and reduce our dependence on fossil fuels. About Ethanol 100 OR E100: Contrary to popular belief, E100 fuel is not 100 percent ethanol. In accordance with specifications, E100 fuel includes 93-93.5 percent ethanol blended with 5 percent petrol and 1.5 percent co-solvent, which is a binder. Currently, E100 is priced the same as petrol — Rs 94.72/litre in Delhi, Rs 104.21/litre in Maharashtra and Rs 100.75/litre in Chennai. However, with wider adoption of the fuel, E100 will definitely be cheaper than petrol or diesel since ethanol is cheaper. In addition, the government’s keenness to provide a fillip to biofuels which help in crude oil import substitution is also likely to make it competitive in comparison to the conventional fuels. Ethanol is made from agricultural feedstock, which also provides income to farmers, making them a stakeholder in decarbonisation of the economy. E100 can be used as fuel in any flex fuel engine car. A flex fuel engine car is designed to run on a variety of fuels. It comes equipped with an internal combustion engine (ICE) which can run on petrol or ethanol or methanol, giving consumers choice at the point of sale of the fuel. ETHANOL 100 stands as a cleaner, greener alternative, boasting lower emissions of greenhouse gases and pollutants, thus aiding in combating climate change and enhancing air quality. With its high-octane rating, typically between 100-105, ETHANOL100 proves ideal for high-performance engines, ensuring improved efficiency and power output all while minimizing environmental impact. Source: PSU WATCH FLUORIDE CONTAMINATION Syllabus Prelims- Environment Context: Recently, Fluoride contamination was detected in three districts of Kerala. Background: According to the State Environment department, the source of contamination is likely geogenic, meaning these constituents are naturally present in the rock or soil matrix and enter groundwater through various chemical processes. About FLUORIDE CONTAMINATION Fluoride contamination in water is a critical issue worldwide. While fluoride is essential for dental health at low concentrations, excessive exposure can lead to health problems. Key Points: Essential Element: Fluoride is naturally present in water and certain foods. It plays a crucial role in preventing tooth decay. Threshold: However, when fluoride levels exceed 1.5 mg/L, it becomes toxic to humans. According to the Bureau of Indian Standards, the maximum permissible limit of arsenic in groundwater meant for drinking is 0.01 mg/l, while the corresponding limit of fluoride is 1.0 mg/l, which can be extended to 1.5 mg/l in case no alternative source of water is available. Health Impacts: Dental Fluorosis: Excessive fluoride causes dental fluorosis, characterized by staining, pitting, and weakening of tooth enamel. Skeletal Fluorosis: Chronic exposure leads to skeletal fluorosis, affecting bones and joints. Neurological Effects: High fluoride levels may impact the nervous system. Sources of Contamination: Geochemical Reactions: Fluoride leaches from rocks and soil into groundwater. Geological Factors: High fluoride content in specific geological formations. Anthropogenic Factors: Industrial processes, fertilizers, and mining contribute to contamination. Preventive Measures: Water Treatment: Implementing effective water treatment methods to reduce fluoride levels. Monitoring: Regular monitoring of fluoride content in drinking water. Awareness: Educating communities about safe water practices. Alternative Sources: Providing alternative water sources in affected areas. Endemic Areas: Certain regions are endemic for fluorosis due to natural geological factors. Balancing Act: Balancing the benefits of fluoride for dental health with the risks of toxicity is crucial. Other Pollutants that Affect Water Quality: Arsenic reaches groundwater through industrial and mining discharges, as well as fly ash ponds from thermal power plants. Chronic exposure to arsenic-contaminated water may lead to diseases such as black foot disease, diarrhea, lung cancer, and skin cancer. Certain regions in India have localized occurrences of elevated uranium concentrations in groundwater. Other elements that act as water pollutants include mercury (causing Minamata disease), cadmium (associated with Itai-Itai disease and nephritis), chromium (linked to lung cancer and reduced photosynthetic activities in plants), copper (causing various health issues), zinc, and lead (associated with anaemia, mental retardation, and other health problems). Source:
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