▼ Largest volcanic region on earth under Antarctica [08-16-17]
The largest volcanic region on Earth - with over 100 volcanoes - has been discovered two km below the surface of the vast ice sheet in west Antarctica.
Researchers from the University of Edinburgh in Britain found a staggering 91 previously unknown volcanoes.
This is adding to the 47 others that had been discovered over the previous century of exploring the region.
The height of these newly discovered volcanoes range from 100 to 3,850 metres, with the highest almost as tall as Switzerland’s 3,970-metre Eiger mountain.
These active peaks are concentrated in a region known as the west Antarctic rift system — which stretches 3,500 km from Antarctica’s Ross ice shelf to the Antarctic peninsula.
Geologists say this huge region is likely to dwarf east Africa’s volcanic ridge - currently rated as the densest concentration of volcanoes in the world.
If one of these volcanoes were to erupt it could further destabilise west Antarctica’s ice sheets.
Anything that causes the melting of ice, which an eruption certainly would, is likely to speed up the flow of ice into the sea.
The Edinburgh volcano survey, reported in the Geological Society’s special publications series, involved studying the underside of the west Antarctica ice sheet for hidden peaks of basalt rock similar to those produced by the region’s other volcanoes.
The biggest question that needs to be resolved is whether these volcanoes are active.
▼ 53 species of medicinal plants under threatened list by BSI [08-14-17]
The Government has taken note of the survey by Botanical Survey of India (BSI) that out of 8,000 medicinal plants.
This is following 53 species are under threatened categories like Critically Endangered, Endangered and Vulnerable.
For conservation and development of medicinal plants in the country, presently the NMPB is implementing Central Sector Scheme for Conservation, Development and Sustainable Management of Medicinal Plants.
The Scheme is aimed at providing project based support for survey, inventorization, in-situ conservation through development of Medicinal Plants Conservation and Development Areas (MPCDAs).
Apart from this, there was ex-situ conservation through establishment of herbal gardens, linkage with Joint Forest Management Committees (JFMCs) / Panchayats / Biodiversity Management Committee (BMC) for value addition activities like drying, grading, storage, primary processing and Research & Development etc.
Under the above activities specific focus is given for conservation and development of threatened category of medicinal plants.
For promoting the cultivation of natural herbs and medicinal plants in the country, presently, the Ministry of AYUSH, Government of India is implementing a Centrally Sponsored Scheme of National AYUSH Mission (NAM).
Under the NAM Scheme, there is a component on ‘Medicinal Plants.’
This is primarily aimed at supporting cultivation of natural herbs and medicinal plants on farmer’s land with backward linkages through establishment of nurseries for supply of quality planting material, and forward linkages for post-harvest management.
The cultivation programme is being implemented through the identified implementing agency of concerned state (generally State Agriculture / Horticulture Departments) and the financial assistance is provided as per the State Annual Action Plan approved for concerned State.
The financial assistance is provided in the form of subsidy @ 30%, 50% and 75% of cost of cultivation of medicinal plants.
Funds released under Centrally Sponsored Scheme of “National Mission of Medicinal Plants” and for component of Medicinal Plants under Centrally Sponsored Scheme of National AYUSH Mission (NAM) during last three years i.e. 2014-15, 2015-16 and 2016-17 is INR 4566.93 lakhs, 2779.8238 lakhs and 4287.097 lakhs respectively.
▼ Ban on use of non-biodegradable plastic less than 50 micron in Delhi [08-11-17]
The National Green Tribunal (NGT) on 10th Aug 2017 imposed an interim ban on use of non-biodegradable plastic bags which are less than 50 microns in the entire national capital.
A bench headed by NGT Chairperson Justice Swatanter Kumar also announced an environment compensation of INR 5,000 on anyone found in possession of such banned plastic.
The tribunal has also directed the Delhi government to seize the entire stock of plastic within one week from the day of the law's passage.
The bench asked the AAP-ruled city government and the Delhi Pollution Control Committee to file an affidavit by a senior most officer and inform it how directions with regard to waste management in the city were being implemented particularly in respect to plastics.
The green panel had last year banned the use of disposable plastic in Delhi and NCR with effect from January 1, 2017 and directed the city government to take steps to reduce dumped waste.
The Tribunal had on July 31, slammed the Delhi government over indiscriminate and rampant use of plastic in the national capital despite its prohibition.
The bench had directed the city government to strictly enforce its ban order in the city and sought a status report on the issue.
The NGT had prohibited the use of disposable plastic in the entire city, especially at hotels, restaurants and for public and private functions.
It asked the Delhi government to take appropriate steps against “storage, sale and use” of such material from January 1 this year.
It had also said that an environment compensation of INR 10,000 would be imposed on vegetable vendors and slaughter houses for throwing garbage in public places.
▼ Karakoram range glaciers grow despite global warming [08-9-17]
A summer ‘vortex’ of cold air over the Karakoram, a large mountain range spanning the borders of India, Pakistan and China, is causing the glaciers in the region to grow in spite of global warming.
Researchers have identified a large scale circulation system - or vortex - centred over the Karakoram mountain range.
In winter, the vortex affects the temperature over the whole 2,000 kilometre mountain range, but in the summer the vortex contracts and has an effect only over the Karakoram and western Pamir, a mountain range in Central Asia.
This induces an anomalous cooling in summer, which is different to the warming seen over the rest of the Himalayas, researchers said.
This Karakoram vortex goes some way to explaining why the glaciers in this region are behaving differently to those in most other parts of the world, they said.
Most climate models suggest warming over the whole region in summer as well as in winter.
However, this study has shown that large-scale circulation is controlling regional variability in atmospheric temperatures, with recent cooling of summer temperatures.
This suggests that climate models do not reproduce this feature well.
Researchers said that it is not known whether climate change will affect this circulation system and what the effect of sudden shifts might be.
However, the circulation system is currently providing a dampening effect on global warming, reducing glacial melt in the Karakoram region and any change will have a significant effect on ice melt rates.
This would ultimately affect river flows in the region, they said.
Usually, glaciers oscillate between growth and retreat.
Snow falls on the peaks and gradually compacts and turns to ice while lower down the glaciers lose ice to melting and evaporation.
If snowfall equals snow-melt, the glacier is in equilibrium but global warming has tipped the balance so that most of the world’s glaciers are shrinking.
Acting like a counter-weighted temperature control, the unique summer interaction of the Karakoram vortex and the South Asian Monsoon causes temperatures in the Karakoram and Pamir to cool while those in the Central and Eastern Himalaya are warming, and vice versa.
Over recent decades, these vortex-monsoon interactions have resulted in stormier conditions over the Karakoram.
This vortex provides an important temperature control.
▼ NAP, GIM launched to implement tree plantation [08-9-17]
To achieve the targets mentioned in the National Forest Policy to maintain 33% forest and tree cover in the country the Ministry of Environment, Forest & Climate Change (MoEF&CC) is implementing two major afforestation/tree plantation schemes.
These include National Afforestation Programme (NAP) scheme and National Mission for a Green India (GIM).
While NAP is being implemented for afforestation of degraded forest lands, GIM aims at improving the quality of forest/increase in forest cover.
GIM also covers cross - sectoral activities on landscape basis.
An area of about 21 lakh ha has been approved for new afforestation with an investment of around INR 3700 crore under NAP since inception in 2000, till 2016-17.
Under GIM an amount of INR 174 crore has been released since 2011-12 to 2016-17 for preparatory and perspective plan.
The fund under Compensatory Afforestation Fund Management and Planning Authority (CAMPA), interalia, is also used in plantation activity including compensatory afforestation to give a massive thrust to afforestation activity in the country.
An area of 1.46 lakh ha. under Item 51(a) and 9460.49 lakh seedlings to be planted under 51(b) have been fixed as total targets for the year 2017-18.
Tree Plantation/afforestation activities are taken up cross-sectorally by various departments, NGOs, civil society, corporate etc. under various Centrally Sponsored Schemes and also under different State Plan/Non Plan Schemes including externally aided projects involving large - scale participation of people and other social organizations.”
▼ South Asia could see catastrophic heat levels by 2100 [08-3-17]
South Asia, home to one-fifth of the world’s population, could see humid heat rise beyond survivable levels by century’s end if nothing is done to halt global warming, researchers said on August 2, 2017.
The study in the journal Science Advances warned of “summer heat waves with levels of heat and humidity that exceed what humans can survive without protection”.
The research is based on two climate models. One is a “business-as-usual” scenario in which little is done to contain climate change.
The second is aimed at limiting temperature rise to well below 2°C, as pledged by more than 190 nations under the 2015 Paris climate accord.
The study is the first of its kind to look not just at temperatures, but at the forecast of “wet-bulb temperature”, which combines temperature, humidity and the human body’s ability to cool down in response.
The survivability threshold is considered to be 35°C, or 95°F.
Under a business-as-usual scenario, “wet-bulb temperatures are projected to approach the survivability threshold over most of South Asia, and exceed it at a few locations, by the end of the century,” said the report.
About 30% of the population in the region would be exposed to these harmful temperatures, up from 0% at present, said the report.
The densely populated farming regions of South Asia could fare the worst, because workers are exposed to heat with little opportunity for escape into air-conditioned environments.
Deadly heat waves could begin within as little as a few decades to strike regions of India, Pakistan, and Bangladesh, including the fertile Indus and Ganges river basins that produce much of the region’s food supply, as per the report.
In 2015, the fifth deadliest heat wave in modern history swept over large parts of India and Pakistan, killing some 3,500 people.
But researchers said their models gave cause for hope, too.
Under the scenario in which steps are taken to limit warming over the coming decades, the population exposed to harmful wet-bulb temperatures would increase from 0% to just 2%.
Temperatures would still reach dangerous levels (over 31°C), but would not be quite so close to the fatal threshold.
South Asia: Know More
- South Asia or Southern Asia is a term used to represent the southern region of the Asian continent, which comprises the sub-Himalayan SAARC countries and, for some authorities, adjoining countries to the west and east.
- Population: 1.749 billion (2013)
- GDP (Nominal): $2.9 trillion
▼ 5 heavy metals in firecrackers banned to curb air pollution [08-2-17]
The Supreme Court has imposed ban on use of five harmful heavy metals like lithium, antimony, mercury, arsenic and lead in the manufacturing of firecrackers as they cause air pollution.
The SC order came on a 2015 petition filed by three Delhi children who had requested the apex court to intervene to regulate the use of crackers and fireworks during festivals like Diwali.
The apex court held that it is the responsibility of the Petroleum and Explosives Safety Organisation (PESO) to ensure compliance of ban order particularly in Sivakasi in Tamil Nadu where there are large number of firecracker manufacturers.
It also asked CPCB (Central Pollution Control Board) and PESO to make collaborative efforts for setting up of standards with regard to air pollution caused by the bursting of fire-crackers.
Heavy metals in firecrackers Lithium is a metal used to impart red colour to fireworks. Antimony is used to create glitter effects.
Lead oxide provides a special crackling effect which, if inhaled, in high concentration can cause damage to the nervous system.
PESO: Know More
- PESO is the apex department to control and administer manufacture, storage, transport and handling of explosives, petroleum, compressed gases and other hazardous substances in India.
- It functions under the Department of Industrial Policy and Promotion (DIPP), Ministry of Commerce and Industry.
- It is headed by Chief Controller of Explosives and is headquartered at Nagpur, Maharashtra.
▼ Bihar, UP sites of 7 NMCG projects [08-1-17]
The Executive Committee of National Mission for Clean Ganga (NMCG) in its 4th meeting has approved seven projects in the sector of sewage infrastructure, ghat development and research.
Three projects each were approved in sewage sector in Uttar Pradesh and Bihar.
Central Government will provide operation and maintenance cost for 15 years to all these six projects along with 100% central assistance
Besides, a research study to understand the non-putrefying properties of river Ganga in both water and sediment was also approved.
The study will be an extension of a research carried out by National Environment Engineering Research Institute (NEERI) to identify the special properties of river’s waters.
About National Mission for Clean Ganga (NMCG)
- NMCG is the implementation wing of National Council for Rejuvenation, Protection and Management of River Ganga (referred as National Ganga Council).
- It was established in 2011 as a registered society under Societies Registration Act, 1860.
- It has a two tier management structure and comprises of Governing Council and Executive Committee. Both of them are headed by Director General (DG), NMCG.
- Executive Committee is authorized to approve projects under mission up to INR 1000 crore. Similar to structure at national level, State Programme Management Groups (SPMGs) acts as implementing arm of State Ganga Committees.
- This structure attempts to bring all stakeholders on one platform to take a holistic approach towards the task of Ganga cleaning and rejuvenation.
- In October 2016, National Ganga Council has replaced National Ganga River Basin Authority(NGRBA) which was constituted under the provisions of the Environment (Protection) Act (EPA), 1986.