Today's Headlines - 16 August 2023
Wildfires ravage Hawaii’s Maui Island
GS Paper - 3 (Environment)
The images of the aftermath of the devastating fire in Hawaii’s Maui Island have grabbed the world’s attention. The wildfires, which have already killed nearly 100 people and left thousands homeless, have become part of a wider global list of unusually intense blazes that have raged across Europe, Canada and the United States.
What happened in Hawaii
Hawaii is no stranger to fires, which burn on a smaller scale with some regularity, especially in the drier parts of the island.
The current fires – active in Lahaina, Upcountry and Pūlehu/Kīhei – are believed to have started with the one in Lahaina spreading quickly across the town.
The exact cause of the fires is still under investigation, but experts agree that the fires were bolstered by strong winds from Category-4 Hurricane Dora, which was passing through the Pacific Ocean – far to the southwest of the island.
Low humidity and dry vegetation too precipitated the issue. Initial reports suggest that the changing land-use patterns in Hawaii, which has seen farm and forest lands being replaced by flammable non-native species of grasses like Guinea grass, are a likely cause for the easy spread of the fire.
Over the past few decades, wildfire has been increasing in Hawaii as a result of changing climate, as a result of increases in invasive species, and a lot of our active agriculture going out… and becoming fallow.
What is the link between wildfires and climate change?
Wildfires have been a part of life on Earth, usually following a seasonal pattern during the June-August period.
Be it natural or human-made, the phenomenon is a critical part of the ecosystem. A healthy fire is key to ensuring that forests remain robust and resilient.
It also aids the natural replenishment of nutrients in the soil, helps sunlight reach the forest floors, and encourages the germination of seeds.
It is the increasingly intense nature of the wildfires – aided by the warming weather, dry conditions and change in rain cycles – that is now becoming a source of worry.
Experts have compared it akin to the difference between throwing a lighted matchstick on a pile of wet, green wood and on dry kindling. And increasingly, climate change is determining the degree of dryness of the latter.
Besides the destruction of lives and livelihoods, these catastrophic wildfires also release an immense amount of carbon dioxide and other greenhouse gases into the atmosphere.
There is also one immediate issue – these immense fires contribute adversely to air pollution, leading to long-term and short-term respiratory issues, heart disease and lung cancer.
#upsc #news #headline #wildfires #hawaiimaui #island #enviroment #worldattention #europe #US #fires #pulehu #kihei #lahaina #pacific #ocean #humidity #category #guinea #forest #ecosystem #natural #peroid #seeds #catastrophic #greenhouse #gases #cancer #airpollution #respiratory #heart #disease
Wildfires ravage Hawaii’s Maui Island
GS Paper - 3 (Environment)
The images of the aftermath of the devastating fire in Hawaii’s Maui Island have grabbed the world’s attention. The wildfires, which have already killed nearly 100 people and left thousands homeless, have become part of a wider global list of unusually intense blazes that have raged across Europe, Canada and the United States.
What happened in Hawaii
Hawaii is no stranger to fires, which burn on a smaller scale with some regularity, especially in the drier parts of the island.
The current fires – active in Lahaina, Upcountry and Pūlehu/Kīhei – are believed to have started with the one in Lahaina spreading quickly across the town.
The exact cause of the fires is still under investigation, but experts agree that the fires were bolstered by strong winds from Category-4 Hurricane Dora, which was passing through the Pacific Ocean – far to the southwest of the island.
Low humidity and dry vegetation too precipitated the issue. Initial reports suggest that the changing land-use patterns in Hawaii, which has seen farm and forest lands being replaced by flammable non-native species of grasses like Guinea grass, are a likely cause for the easy spread of the fire.
Over the past few decades, wildfire has been increasing in Hawaii as a result of changing climate, as a result of increases in invasive species, and a lot of our active agriculture going out… and becoming fallow.
What is the link between wildfires and climate change?
Wildfires have been a part of life on Earth, usually following a seasonal pattern during the June-August period.
Be it natural or human-made, the phenomenon is a critical part of the ecosystem. A healthy fire is key to ensuring that forests remain robust and resilient.
It also aids the natural replenishment of nutrients in the soil, helps sunlight reach the forest floors, and encourages the germination of seeds.
It is the increasingly intense nature of the wildfires – aided by the warming weather, dry conditions and change in rain cycles – that is now becoming a source of worry.
Experts have compared it akin to the difference between throwing a lighted matchstick on a pile of wet, green wood and on dry kindling. And increasingly, climate change is determining the degree of dryness of the latter.
Besides the destruction of lives and livelihoods, these catastrophic wildfires also release an immense amount of carbon dioxide and other greenhouse gases into the atmosphere.
There is also one immediate issue – these immense fires contribute adversely to air pollution, leading to long-term and short-term respiratory issues, heart disease and lung cancer.
#upsc #news #headline #wildfires #hawaiimaui #island #enviroment #worldattention #europe #US #fires #pulehu #kihei #lahaina #pacific #ocean #humidity #category #guinea #forest #ecosystem #natural #peroid #seeds #catastrophic #greenhouse #gases #cancer #airpollution #respiratory #heart #disease
Today's Headlines - 19 August 2023
WHO holds first traditional medicine summit
GS Paper - 3 (Health and Diseases)
The World Health Organization opened its first summit on traditional medicine with the group saying it was seeking to collect evidence and data to allow for the safe use of such treatments. Traditional medicines are a "first port of call for millions of people worldwide", the UN health agency said.
More about the summit
The two-day WHO Traditional Medicine Global Summit takes place alongside a meeting of G20 health ministers in the Indian city of Gandhinagar.
The first global traditional summit, co-hosted by the World Health Organization (WHO) and the Ministry of Ayush.
This summit is designed to foster political commitment and evidence-based action in the field of traditional medicine.
As a vital healthcare source for millions worldwide, traditional medicine will be closely examined and evaluated as a formidable force in addressing health and well-being needs.
With a wide array of engagement groups, working groups, and meetings, this event aims to represent the interests of the Global South countries within the G20 framework.
The theme of "One Earth, One Family, One Future" embodies India's philosophy of Vasudhaiva Kutumbakam.
More about traditional medicine
The UN health agency defines traditional medicine as the knowledge, skills and practices used over time to maintain health and prevent, diagnose and treat physical and mental illness.
But many traditional treatments have no proven scientific value and conservationists say the industry drives a rampant trade in endangered animals -- including tigers, rhinos and pangolins -- threatening the existence of entire species.
Use of homemade remedies soared during the Covid-19 pandemic, including a green herbal drink based on Artemisia that was promoted by Madagascar's president as a cure.
The plant has a proven efficacy in malaria treatment, but its use to combat Covid was widely scorned by many doctors.
In China, traditional medicine has a distinguished history, but top European medical bodies have previously demanded it be subject to the same regulatory oversight as conventional medical methods.
Flashback
Of the WHO's 194 member states, 170 acknowledged their use of traditional and complementary medicine since 2018, but only 124 reported having laws or regulations for the use of herbal medicines -- while only half had a national policy on such methods and medicines.
About 40 percent of approved pharmaceutical products currently in use derive from a "natural product basis", according to the WHO, which cited "landmark drugs" that derive from traditional medicine, including aspirin, drawing on formulations using willow tree bark.
#upsc #news #headline #WHO #traditional #medicine #health #diseases #data #millions #worldwide #ministry #gandhinagar #global #vasudhaiva #kutumbakam #earth #framework #force #future #philosophy #agency #mental #illness #artemisia #species #pandemic #remedies #herbal #madagascar #european #regulatory #complementary #reported #pharmaceutical #products #natural
WHO holds first traditional medicine summit
GS Paper - 3 (Health and Diseases)
The World Health Organization opened its first summit on traditional medicine with the group saying it was seeking to collect evidence and data to allow for the safe use of such treatments. Traditional medicines are a "first port of call for millions of people worldwide", the UN health agency said.
More about the summit
The two-day WHO Traditional Medicine Global Summit takes place alongside a meeting of G20 health ministers in the Indian city of Gandhinagar.
The first global traditional summit, co-hosted by the World Health Organization (WHO) and the Ministry of Ayush.
This summit is designed to foster political commitment and evidence-based action in the field of traditional medicine.
As a vital healthcare source for millions worldwide, traditional medicine will be closely examined and evaluated as a formidable force in addressing health and well-being needs.
With a wide array of engagement groups, working groups, and meetings, this event aims to represent the interests of the Global South countries within the G20 framework.
The theme of "One Earth, One Family, One Future" embodies India's philosophy of Vasudhaiva Kutumbakam.
More about traditional medicine
The UN health agency defines traditional medicine as the knowledge, skills and practices used over time to maintain health and prevent, diagnose and treat physical and mental illness.
But many traditional treatments have no proven scientific value and conservationists say the industry drives a rampant trade in endangered animals -- including tigers, rhinos and pangolins -- threatening the existence of entire species.
Use of homemade remedies soared during the Covid-19 pandemic, including a green herbal drink based on Artemisia that was promoted by Madagascar's president as a cure.
The plant has a proven efficacy in malaria treatment, but its use to combat Covid was widely scorned by many doctors.
In China, traditional medicine has a distinguished history, but top European medical bodies have previously demanded it be subject to the same regulatory oversight as conventional medical methods.
Flashback
Of the WHO's 194 member states, 170 acknowledged their use of traditional and complementary medicine since 2018, but only 124 reported having laws or regulations for the use of herbal medicines -- while only half had a national policy on such methods and medicines.
About 40 percent of approved pharmaceutical products currently in use derive from a "natural product basis", according to the WHO, which cited "landmark drugs" that derive from traditional medicine, including aspirin, drawing on formulations using willow tree bark.
#upsc #news #headline #WHO #traditional #medicine #health #diseases #data #millions #worldwide #ministry #gandhinagar #global #vasudhaiva #kutumbakam #earth #framework #force #future #philosophy #agency #mental #illness #artemisia #species #pandemic #remedies #herbal #madagascar #european #regulatory #complementary #reported #pharmaceutical #products #natural
Today's Headlines - 23 August 2023
The vegetated canopies for creating green spaces
GS Paper - 3 (Environment)
As Europe battles scorching temperatures this summer and wildfires blaze across the continent from the Mediterranean to Spain, the role of climate change in making heatwaves hotter and more frequent has come into focus. At a broader level, greenhouse gas emissions from human activities have heated the planet by about 1.2 degrees Celsius since pre-industrial times. These grim predictions have brought attention to a range of mitigation measures. One such initiative to bring greenery back to urban spaces in Spain involves installing vegetated awnings or canopies.
What are vegetated canopies?
Introduced in Santa Maria Street in Valladolid, Spain, the awnings are tensioned sail-like structures that have been anchored to the facades of surrounding buildings. They mimic natural canopies found in forests and various plant species.
The lightness and ease of installation of the ‘Greenshades’ allow for shade and the presence of greenery in commercial streets and public spaces, where trees or other vegetation are often absent.
Here is how they work:
The sails with anchors and supports are prepared by laying down the specific geotextile substrate or material. An irrigation system is installed at the highest side, from where the water falls by gravity, soaking the entire substrate.
In addition to water, fertilizer keeps the vegetation in perfect condition. The excess water is collected at the lowest point and into a connected drainage system.
The seed mixture is then projected onto the geotextile. After four months, the shade is expected to be completely covered with vegetation.
The awnings can be placed in streets, where planting trees may not be feasible owing to the lack of space. The plants grow hydroponically, with a water supply point and water outlet for draining purposes.
What are their advantages?
The plants chosen for these awnings belong to species that are optimised for the absorption of gases such as carbon monoxide and nitrogen oxide.
The substrate also absorbs sound waves, reducing noise pollution. A square metre of a vegetated canopy generates the oxygen required by a person for the whole year, apart from filtering harmful gases, according to the company.
The hanging planter also allows for the centralisation of water and light installations.
This is meant to induce savings as the lights are equipped with movement sensors that illuminate the street according to its need.
The adoption of such canopies could eventually contribute to urban biodiversity, creating a healthier ecosystem that supports a variety of wildlife.
#upsc #news #headline #vegetated #canopies #greenspace #enviroment #europe #battle #temperature #wildfires #blaze #mediterranean #emissions #spain #climatechange #heatwaves #hotter #preindustrial #structures #forests #greenery #commercial #greenshades #mimic #natural #work #gravaity #planting #lackofspace #hydroponically #gases #species #carbonmonoxide #hangingplanter #wildlife #biodiversity #ecosystem #illuminate
The vegetated canopies for creating green spaces
GS Paper - 3 (Environment)
As Europe battles scorching temperatures this summer and wildfires blaze across the continent from the Mediterranean to Spain, the role of climate change in making heatwaves hotter and more frequent has come into focus. At a broader level, greenhouse gas emissions from human activities have heated the planet by about 1.2 degrees Celsius since pre-industrial times. These grim predictions have brought attention to a range of mitigation measures. One such initiative to bring greenery back to urban spaces in Spain involves installing vegetated awnings or canopies.
What are vegetated canopies?
Introduced in Santa Maria Street in Valladolid, Spain, the awnings are tensioned sail-like structures that have been anchored to the facades of surrounding buildings. They mimic natural canopies found in forests and various plant species.
The lightness and ease of installation of the ‘Greenshades’ allow for shade and the presence of greenery in commercial streets and public spaces, where trees or other vegetation are often absent.
Here is how they work:
The sails with anchors and supports are prepared by laying down the specific geotextile substrate or material. An irrigation system is installed at the highest side, from where the water falls by gravity, soaking the entire substrate.
In addition to water, fertilizer keeps the vegetation in perfect condition. The excess water is collected at the lowest point and into a connected drainage system.
The seed mixture is then projected onto the geotextile. After four months, the shade is expected to be completely covered with vegetation.
The awnings can be placed in streets, where planting trees may not be feasible owing to the lack of space. The plants grow hydroponically, with a water supply point and water outlet for draining purposes.
What are their advantages?
The plants chosen for these awnings belong to species that are optimised for the absorption of gases such as carbon monoxide and nitrogen oxide.
The substrate also absorbs sound waves, reducing noise pollution. A square metre of a vegetated canopy generates the oxygen required by a person for the whole year, apart from filtering harmful gases, according to the company.
The hanging planter also allows for the centralisation of water and light installations.
This is meant to induce savings as the lights are equipped with movement sensors that illuminate the street according to its need.
The adoption of such canopies could eventually contribute to urban biodiversity, creating a healthier ecosystem that supports a variety of wildlife.
#upsc #news #headline #vegetated #canopies #greenspace #enviroment #europe #battle #temperature #wildfires #blaze #mediterranean #emissions #spain #climatechange #heatwaves #hotter #preindustrial #structures #forests #greenery #commercial #greenshades #mimic #natural #work #gravaity #planting #lackofspace #hydroponically #gases #species #carbonmonoxide #hangingplanter #wildlife #biodiversity #ecosystem #illuminate