UN climate summit sets new pathways to reduce emissions

Agencies
September 24, 2019

United Nations, Sept 24:Leaders from government, business, and civil society on Monday announced potentially far-reaching steps to confront climate change at the United Nations Secretary General's Climate Action Summit here on Monday.

As carbon pollution, temperatures, and climate destruction continue to rise, and public backlash mounts, the Summit offered a turning point from inertia into momentum, action, and global impact -- if everyone gets on board.

The UN estimates that the world would need to increase its efforts between three and five-fold to contain climate change to the levels dictated by science -- a 1.5 degrees Celsius rise at most -- and avoid escalating climate damage already taking place around the world.

With the Paris Agreement providing an open-door framework for countries to continuously ratchet up their positive actions, this Summit demonstrates how governments, businesses, and civilians around the world are rising to the challenge.

"The best science, according to the Intergovernmental Panel on Climate Change, tells us that any temperature rise above 1.5 degrees will lead to major and irreversible damage to the ecosystems that support us," UN Secretary General Antonio Guterres said.

"Science tells us that on our current path, we face at least 3 degrees Celsius of global heating by the end of the century.

"The climate emergency is a race we are losing, but it is a race we can win.

"This is not a climate talk summit. We have had enough talk," he added.

Guterres stressed that this was "not a climate negotiation summit" because "you don't negotiate with nature. This is a climate action summit".

"Governments are here to show you are serious about enhancing Nationally Determined Contributions under the Paris Agreement. Cities and businesses are here showing what leadership looks like, investing in a green future. Financial actors are here to scale-up action and deploy resources in fundamentally new and meaningful ways. Coalitions are here with partnerships and initiatives to move us closer to a resilient, carbon-neutral world by 2050."

The Summit, designed to showcase government, business, and civil society efforts to increase their commitments under the Paris Agreement and work toward reducing emissions to essentially zero by mid-century.

Many countries used the Summit to demonstrate next steps on how by 2020 they will update their Nationally Determined Contributions (NDCs) with the aim to collectively reduce emissions by at least 45 percent by 2030 and prepare national strategies to achieve carbon neutrality by mid-century.

Chile's President, Sebastian Pinera, announced the "Climate Ambition Alliance," which Chile hopes to build in the lead-up to COP25 in Santiago.

The Alliance brings together nations upscaling action by 2020, as well as those working towards achieving net zero CO2 emissions by 2050.

As many 59 nations have signaled their intention to submit an enhanced climate action plan (or NDC), and an additional nine nations have started an internal process to boost ambition and have this reflected in their national plans.

In terms of the 2050 group, 66 governments are joined by 10 regions, 102 cities, 93 businesses and 12 investors -- all committed to net zero CO2 emissions by 2050.

The UN Global Compact demonstrated that business is moving, as companies with a combined market capitalization of more than $2.3 trillion and annual direct emissions equivalent to 73 coal-fired power plants pledged to take action to align their businesses with science-based targets.

Many of the more than 70 key announcements showcase the concrete ways in which countries can better adapt to climate change and cut emissions while getting the necessary technical and financial support many of them need.

Getting out of coal is a priority.

The Powering Past Coal Alliance expanded to include 30 countries, 22 states or regions, and 31 corporations committed to stopping the building of new coal power plants in 2020 and rapidly transitioning to renewable energy.

The Asset Owner Alliance, a group of the world's largest pension funds and insurers, responsible for directing more than $2 trillion in investments, committed to transitioning to carbon-neutral investment portfolios by 2050.

The members of the Alliance will immediately start to engage with companies in which they are investing to ensure they decarbonize their business models.

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Agencies
July 3,2020

Mumbai, Jul 3: In yet another move to keep Chinese technologies companies at bay, the Centre has cancelled the 4G upgradation tender for BSNL as it has decided to come up with fresh specifications for the upgrade process, sources said.

The Department of Telecommunications (DoT) is likely to issue a fresh tender in the next two weeks.

People in the know said that the fresh tender may not allow Chinese companies to participate and that the new tenders that will be floated in the next two weeks will emphasise on Make in India.

As the border tussle with China escalated last month and around 20 soldiers lost their lives, the government had last month asked both BSNL and MTNL not to use equipment of Chinese makers in their upgrading process to 4G facilities.

Huawei and ZTE are the major Chinese telecom equipment makers working with Indian telecom companies and they would be the hardest hit by the decision.

The impact may be felt in terms of the much-awaited 5G trials in the country. After much deliberation, the Centre last December decided to allow Huawei to take part in the 5G trials.

The cancellation of tender for BSNL's 4G upgradation comes after the Centre on Monday banned 59 Chinese apps including TikTok, WeChat and UC Browser.

A statement by the Ministry of Electronics and IT said that the decision was taken since "there is credible information that these apps are engaged in activities which are prejudicial to sovereignty and integrity of India, defence of India, security of state and public order".

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Agencies
February 6,2020

Washington D.C., Feb 6: An international team of astronomers has found an unusual monster galaxy that existed about 12 billion years ago when the universe was only 1.8 billion years old.

The team of astronomers was led by scientists at the University of California, Riverside.

Dubbed XMM-2599, the galaxy formed stars at a high rate and then died. Why it suddenly stopped forming stars is unclear.

"Even before the universe was 2 billion years old, XMM-2599 had already formed a mass of more than 300 billion suns, making it an ultra massive galaxy," said Benjamin Forrest, a postdoctoral researcher in the UC Riverside Department of Physics and Astronomy and the study's lead author.

"More remarkably, we show that XMM-2599 formed most of its stars in a huge frenzy when the universe was less than 1 billion years old and then became inactive by the time the universe was only 1.8 billion years old," Forrest added.

The team used spectroscopic observations from the W. M. Keck Observatory's powerful Multi-Object Spectrograph for Infrared Exploration or MOSFIRE, to make detailed measurements of XMM-2599 and precisely quantify its distance.

The study results appear in the Astrophysical Journal.

"In this epoch, very few galaxies have stopped forming stars, and none are as massive as XMM-2599," said Gillian Wilson, a professor of physics and astronomy at UCR in whose lab Forrest works.

"The mere existence of ultramassive galaxies like XMM-2599 proves quite a challenge to numerical models. Even though such massive galaxies are incredibly rare at this epoch, the models do predict them."

"The predicted galaxies, however, are expected to be actively forming stars. What makes XMM-2599 so interesting, unusual, and surprising is that it is no longer forming stars, perhaps because it stopped getting fuel or its black hole began to turn on. Our results call for changes in how models turn off star formation in early galaxies," the professor stated.

The research team found XMM-2599 formed more than 1,000 solar masses a year in stars at its peak of activity -- an extremely high rate of star formation. In contrast, the Milky Way forms about one new star a year.

"XMM-2599 may be a descendant of a population of highly star-forming dusty galaxies in the very early universe that new infrared telescopes have recently discovered," said Danilo Marchesini, an associate professor of astronomy at Tufts University and a co-author on the study.

"We have caught XMM-2599 in its inactive phase," Wilson said, who led the W. M. Keck Observatory data acquisition
Co-author Michael Cooper, a professor of astronomy at UC Irvine, said this outcome is a strong possibility.

"Perhaps during the following 11.7 billion years of cosmic history, XMM-2599 will become the central member of one of the brightest and most massive clusters of galaxies in the local universe," he said.

"Alternatively, it could continue to exist in isolation. Or we could have a scenario that lies between these two outcomes," he stated.

The study was supported by grants from the National Science Foundation and NASA.

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Agencies
July 4,2020

The Mars Colour Camera (MCC) onboard ISRO's Mars Orbiter Mission has captured the image of Phobos, the closest and biggest moon of Mars.

The image was taken on July 1 when MOM was about 7,200 km from Mars and 4,200 km from Phobos.

"Spatial resolution of the image is 210 m.

This is a composite image generated from 6 MCC frames and has been color corrected," ISRO said in an update along with the image.

Phobos is largely believed to be made up of carbonaceous chondrites.

According to ISRO, "the violent phase that Phobos has encountered is seen in the large section gouged out from a past collision (Stickney crater) and bouncing ejecta."

"Stickney, the largest crater on Phobos along with the other craters (Shklovsky, Roche & Grildrig) are also seen in this image," it said.

The mission also known as Mangalyaan was initially meant to last six months, but subsequently ISRO had said it had enough fuel for it to last "many years."

The country had on September 24, 2014 successfully placed the Mars Orbiter Mission spacecraft in orbit around the red planet, in its very first attempt, thus breaking into an elite club.

ISRO had launched the spacecraft on its nine-month- long odyssey on a homegrown PSLV rocket from Sriharikota in Andhra Pradesh on November 5, 2013.

It had escaped the earth's gravitational field on December 1, 2013.

The Rs 450-crore MOM mission aims at studying the Martian surface and mineral composition as well as scan its atmosphere for methane (an indicator of life on Mars).

The Mars Orbiter has five scientific instruments - Lyman Alpha Photometer (LAP), Methane Sensor for Mars (MSM), Mars Exospheric Neutral Composition Analyser (MENCA), Mars Colour Camera (MCC) and Thermal Infrared Imaging Spectrometer

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