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Chemical ban helped closing up of ozone layer hole: NASA

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New York:An international ban on ozone-destroying chlorine that contains manmade chemicals called chlorofluorocarbons(CFCs) has led to less ozone depletion, NASA scientists have reported.

CFCs are long-living chemical compounds that eventually rise into the stratosphere, where they are broken apart by the Sun’s ultraviolet radiation, releasing chlorine atoms that then go on to destroy ozone molecules.

“We see very clearly that chlorine from CFCs is going down in the ozone hole, and that less ozone depletion is occurring because of it,” said lead author Susan Strahan, an atmospheric scientist from NASA’s Goddard Space Flight Centre in Maryland.

 

The ban on the CFCs resulted in about 20 per cent less ozone depletion during the Antarctic winter from 2005 to 2016, while chlorine levels declined by an average 0.8 per cent annually, the scientists said.

Stratospheric ozone protects life on the planet by absorbing potentially harmful ultraviolet radiation that can cause skin cancer and cataracts, suppress immune systems and damage plant life.

The Antarctic ozone hole forms during September in the Southern Hemisphere’s winter as the returning sun’s rays catalyse ozone destruction cycles involving chlorine and bromine that come primarily from CFCs.

The change in ozone levels above Antarctica from the beginning to the end of southern winter — early July to mid-September — was computed daily from the Microwave Limb Sounder (MLS) aboard the Aura satellite every year from 2005 to 2016.

When ozone destruction is ongoing, chlorine is found in many molecular forms, most of which are not measured. But after chlorine has destroyed nearly all the available ozone, it reacts instead with methane to form hydrochloric acid — a gas measured by MLS.

The Antarctic ozone hole should continue to recover gradually as CFCs leave the atmosphere, but complete recovery will take decades, the researchers said, in the paper published in the journal Geophysical Research Letters.

“CFCs have lifetimes from 50 to 100 years, so they linger in the atmosphere for a very long time,” said Anne Douglass, a fellow atmospheric scientist at the Goddard Centre.

“As far as the ozone hole being gone, we’re looking at 2060 or 2080. And even then there might still be a small hole.”


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Taliban resumes peace talks with US envoy in Qatar

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Islamabad :The Taliban and the United States resumed talks in Doha, Qatar with an aim to end the stalemate over the participation of Afghan government in the negotiations for a political settlement of the conflict.

Zabihullah Mujahid, Taliban spokesman in a statement said, “Following American acceptance of the agenda of ending invasion of Afghanistan and preventing Afghanistan from being used against other countries in the future, talks with American representatives took place today in Doha.”

Doha meeting happened as the Taliban fighters attacked an Afghan intelligence agency — National Directorate of Security — installation in Maidan Shahr, Kabul, killing and wounding dozens of security personnel.

 

The two sides — US and Taliban — had last met in December 2018 in Abu Dhabi in a meeting facilitated by Pakistan and observed by Saudi Arabia and UAE. It had been agreed at the meeting that the engagement process would be continued. But, arranging the next round of talks became difficult due to the Taliban’s inflexibility over negotiating with the Afghan government. The Taliban have, meanwhile, been insisting that US should instead withdraw its forces and release Taliban prisoners.

There was no word from the US side on the Taliban claim after the latest meeting in Doha that US had agreed to discuss withdrawal plans.

Recently, the Afghan Taliban while rejecting media reports of possible talks with the US in Islamabad and reiterated that they will not deal directly with the Afghan Government.

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11 die as ships with Indian, Turkish crews catch fire in Kerch Strait

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Moscow:Two ships carrying Indian, Turkish and Libyan crew members had caught fire in the Kerch Strait separating Crimea from Russia, killing at least 11 people, media reports said on Tuesday.

The fire broke out off Russia’s territorial waters. Both vessels were flying Tanzanian flags. One of them was a liquefied natural gas carrier and the other a tanker. The fire broke out as the two ships were transferring fuel from one to the other.

One of the ships, the Candy, had a 17-member crew–nine Turkish citizens and eight Indian nationals.

 

The other, the Maestro, had a 15-member crew–seven Turkish nationals, seven Indian citizens and an intern from Libya, Russian news agency Tass quoted maritime authority as saying.

At least 11 sailors had died, Russian Maritime Agency was quoted by RT news, a Russian television network.

“Presumably, an explosion occurred (on one of the vessels). Then the fire spread to another vessel. A rescue tug is en route,” said a spokesman for the Russian Maritime Agency.

Some three dozen sailors managed to escape the burning ships by jumping off the vessels.

Twelve people have so far been rescued from the sea. Nine sailors were still listed as missing, the spokesperson said.

Severe weather conditions at sea had prevented rescue ships from taking victims to the shore for medical treatment, the report added.

The Kerch Strait is a key waterway that holds strategic importance for both Russia and Ukraine.

It is an important economic lifeline for Ukraine that allows ships leaving the port city of Mariupol to access the Black Sea.

It’s also the closest point of access for Russia to Crimea, a peninsula Moscow annexed in 2014. A Russian-built bridge over the Kerch Strait opened in May last year. PTI

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Pak shares Kartarpur draft pact, calls India ‘urgently’ to finalise deal

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Lahore/New Delhi: Pakistan said it has shared a draft agreement on the Kartarpur Corridor with India and invited New Delhi to “urgently” send a delegation to Islamabad to “negotiate and finalise” the proposal.

The proposed agreement aims at facilitating travel of Indian Sikh pilgrims to Darbar Sahib Kartarpur Gurudwara in Narowal, nearly 4 km away from Gurdaspur border on the Indian side.

“The draft agreement between the two governments has been shared with New Delhi through the Indian High Commission in Islamabad,” Pakistan Foreign Office spokesman Mohammad Faisal said in a statement.

 

The move is in line with Pakistan’s policy of promoting inter-faith harmony and religious tolerance and Mohammad Ali Jinnah’s vision of a peaceful neighbourhood, he added.

Pakistan has appointed Director-General (South Asia and SAARC) as the focal person on its side and requested India to designate its focal person soon.

Pakistan also invited India to “urgently send a delegation to Islamabad to negotiate and finalise the agreement”, Faisal said.

He also tweeted, “Continuing with PM Imran Khan’s initiative, Pakistan, today, shared the proposed draft agreement on Kartarpur Corridor with India. Indian delegation invited to visit Islamabad for an expedited conclusion of the agreement. Keeping promises – Work in progress on Kartarpur Corridor on Pakistan side.”

Vice President M Venkaiah Naidu and Punjab Chief Minister Amarinder Singh on November 26 last year laid the foundation stone of the Kartarpur corridor in Gurdaspur district.

Two days later on November 28, Pakistan’s Prime Minister Imran Khan laid the foundation stone of the corridor at Narowal, 125 km from Lahore.

The decision to build the corridor – from Dera Baba Nanak in Gurdaspur district to the international border – was taken by the Union Cabinet on November 22.

The much-awaited corridor will connect Darbar Sahib in Kartarpur – the final resting place of Sikh faith’s founder Guru Nanak Dev – with Dera Baba Nanak shrine in Gurdaspur district and facilitate visa-free movement of Indian Sikh pilgrims, who will have to just obtain a permit to visit Kartarpur.

The corridor was a long-pending demand of the Sikh community. Pakistan had committed to open the corridor in November on the occasion of the 550th birth anniversary of Guru Nanak Dev.

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