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Kensington (United States), May 20: The world cut its daily carbon dioxide emissions by 17% at the peak of the pandemic shutdown last month, a new study found.

But with life and heat-trapping gas levels inching back toward normal, the brief pollution break will likely be “a drop in the ocean" when it comes to climate change, scientists said.

In their study of carbon dioxide emissions during the coronavirus pandemic, an international team of scientists calculated that pollution levels are heading back up — and for the year will end up between 4% and 7% lower than 2019 levels.

That's still the biggest annual drop in carbon emissions since World War II.

It'll be 7% if the strictest lockdown rules remain all year long across much of the globe, 4% if they are lifted soon.

For a week in April, the United States cut its carbon dioxide levels by about one-third.

China, the world's biggest emitter of heat-trapping gases, sliced its carbon pollution by nearly a quarter in February, according to a study Tuesday in the journal Nature Climate Change. India and Europe cut emissions by 26% and 27% respectively.

The biggest global drop was from April 4 through 9 when the world was spewing 18.7 million tons (17 million metric tons) of carbon pollution a day less than it was doing on New Year's Day.

Such low global emission levels haven't been recorded since 2006. But if the world returns to its slowly increasing pollution levels next year, the temporary reduction amounts to ''a drop in the ocean," said study lead author Corinne LeQuere, a climate scientist at the University of East Anglia.

“It's like you have a bath filled with water and you're turning off the tap for 10 seconds," she said.

By April 30, the world carbon pollution levels had grown by 3.3 million tons (3 million metric tons) a day from its low point earlier in the month. Carbon dioxide stays in the air for about a century.

Outside experts praised the study as the most comprehensive yet, saying it shows how much effort is needed to prevent dangerous levels of further global warming.

“That underscores a simple truth: Individual behavior alone ... won't get us there,” Pennsylvania State University climate scientist Michael Mann, who wasn't part of the study, said in an email.

“We need fundamental structural change.”

If the world could keep up annual emission cuts like this without a pandemic for a couple decades, there's a decent chance Earth can avoid warming another 1.8 degrees (1 degree Celsius) of warming from now, study authors said. But getting the type of yearly cuts to reach that international goal is unlikely, they said.

If next year returns to 2019 pollution levels, it means the world has only bought about a year's delay in hitting the extra 1.8 degrees (1 degree Celsius) of warming that leaders are trying to avoid, LeQuere said. That level could still occur anywhere from 2050 to 2070, the authors said.

The study was carried out by Global Carbon Project, a consortium of international scientists that produces the authoritative annual estimate of carbon dioxide emissions. They looked at 450 databases showing daily energy use and introduced a measurement scale for pandemic-related societal “confinement” in its estimates.

Nearly half the emission reductions came from less transportation pollution, mostly involving cars and trucks, the authors said. By contrast, the study found that drastic reductions in air travel only accounted for 10% of the overall pollution drop.

In the US, the biggest pollution declines were seen in California and Washington with plunges of more than 40%.

Apr 11: The number of global coronavirus deaths has increased to 102,753, while the total number of cases worldwide has surpassed 1.6 million, according to the latest update by the Washington-based Johns Hopkins University.

As of Saturday morning, the overall number of infections increased to 1,698,416, while the tally of those who recovered from the deadly disease stood at 376,677, according to the varsity's Center for Systems Science and Engineering (CSSE).

In terms of cases, the US had the highest in the world at 501,301, followed by Spain 158,273, Italy 147,577 and France 125,931.

Italy accounted for the highest death toll at 18,849, with the US in the second place with 18,769 fatalities.

Other countries with more than 10,000 deaths include Spain (16,081) and France (13,197).

Although the pandemic originated in China last December, it now only accounts for 3,343 deaths with 83,003 confirmed cases.

London, Mar 26: British Prime Minister Boris Johnson has said that the country's NHS risks becoming "overwhelmed" by the coronavirus outbreak and that the situation in Britain is just two or three weeks behind Italy.
"The numbers are very stark, and they are accelerating. We are only a matter of weeks -- two or three -- behind Italy," Johnson said, as reported by CNN.
"The Italians have a superb health care system. And yet their doctors and nurses have been completely overwhelmed by the demand. The Italian death toll is already in the thousands and climbing.
He added, "Unless we act together unless we make the heroic and collective national effort to slow the spread -- then it is all too likely that our own NHS will be similarly overwhelmed,"
"That is why this country has taken the steps that it has, in imposing restrictions never seen before either in peace or war." He said.
The problem reached a crunch point in the UK, which has dramatically increased its response to the virus outbreak this week.
Food banks that provide a lifeline for some of the estimated 14 million in poverty are running low on volunteers, many of whom have been forced to self-isolate, as well as the food itself, which is in short supply following panic-buying.
The UK has confirmed more 9,600 cases of the deadly virus with 460 deaths.
The global tally of cases has crossed 487,000 as on Thursday with 22,030 deaths globally as per the data presented by the Johns Hopkins University.