The Emissions Impact of Coronavirus Lockdowns

There’s a high chance you’re reading this while practicing social distancing, or while your corner of the world is under some type of advised or enforced lockdown.

While these are necessary measures to contain the spread of the COVID-19 pandemic, such economic interruption is unprecedented in many ways—resulting in some surprising side effects.

The Evidence is in NO₂ Emissions

Nitrogen dioxide (NO₂) emissions, a major air pollutant, are closely linked to factory output and vehicles operating on the road.

As both industry and transport come to a halt during this pandemic, NO₂ emissions can be a good indicator of global economic activity—and the changes are visible from space.

These images from the Centre for Research on Energy and Clean Air (CREA), as well as satellite footage from NASA and the European Space Agency (ESA), show a drastic decline in NO₂ emissions over recent months, particularly across Italy and China.

NO₂ Emissions Across Italy

In Italy, the number of active COVID-19 cases has surpassed China (including the death toll). Amid emergency actions to lock down the entire nation, everything from schools and shops, to restaurants and even some churches, are closed.

Italy is also an industrial hub, with the sector accounting for nearly 24% of GDP. With many Italians urged to work from home if possible, visible economic activity has dropped considerably.

This 10-day moving average animation (from January 1st—March 11th, 2020) of nitrogen dioxide emissions across Europe clearly demonstrates how the drop in Italy’s economic activity has impacted the environment.

Source: European Space Agency (ESA)

That’s not all: a drop in boat traffic also means that Venice’s canals are clear for the time being, as small fish have begun inhabiting the waterways again. Experts are cautious to note that this does not necessarily mean the water quality is better.

NO₂ Emissions Across China

The emissions changes above China are possibly even more obvious to the eye. China is the world’s most important manufacturing hub and a significant contributor to greenhouse gases globally. But in the month following Lunar New Year (a week-long festival in early February), satellite imagery painted a different picture.

Source: NASA Earth Observatory

NO₂ emissions around the Hubei province, the original epicenter of the virus, steeply dropped as factories were forced to shutter their doors for the time being.

What’s more, there were measurable effects in the decline of other emission types from the drop in coal use during the same time, compared to years prior.

Back to the Status Quo?

In recent weeks, China has been able to flatten the curve of its total COVID-19 cases. As a result, the government is beginning to ease its restrictions—and it’s clear that social and economic activities are starting to pick back up in March.

Source: European Space Agency (ESA)

With the regular chain of events beginning to resume, it remains to be seen whether NO₂ emissions will rebound right back to their pre-pandemic levels.

This bounce-back effect—which can sometimes reverse any overall drop in emissions—is [called] “revenge pollution”. And in China, it has precedent.

—Li Shuo, Senior climate policy advisor, Greenpeace East Asia

World’s Highest Mountains, and What Their Names Mean

View the high resolution version of this infographic by clicking here

From the Himalayas to the Andes, mountains have inspired and awed us for thousands of years.

Humans have ascribed all sorts of mythologies and metaphors to these jagged geological features. But while Everest or Kilimanjaro may ring a bell, do you know the meaning behind their names?

Today’s infographic from Alan’s Factory Outlet sorts the world’s highest mountains by continent, and explains the detailed origins of their names.

A Mountain By Any Other Name

Out of the 70 mountains profiled, only 41 are actually considered mountains. The rest are technically either a massif or a volcano (or a dome in one instance).

A massif (French for ‘massive’) is produced when a hard, unbendable rock is pushed towards the surface. They can also be formed when magma hardens once it’s above ground. For the rest of this post, we’ll refer to mountains and massifs interchangeably.

The highest mountains on each continent are considered to be part of the Seven Summits. Mountaineer Richard Bass was the first to scale all seven summits in 1985—and the 55-year old did so in only one year.

The Highest Mountain on Each Continent

Among these impressive peaks, two are technically volcanoes—Mount Kilimanjaro in Tanzania, and Mount Elbrus in Russia. Overall, it’s clear that a majority of their names have been influenced by the native languages in their surroundings.

The 10 Asian Giants

The highest mountains in the world are all in Asia, with nine of the ten highest found in the Himalayan range. Many of their names are derived from Sino-Tibetan languages, and some have mythological or religious influences.

The second-highest mountain, K2 in Pakistan, lacks a more flowery name because it isn’t visible by any locals due to its remote location.

Majestic North America

The highest peaks in this region are scattered across three countries, with five volcanoes, four mountains, and one massif. Denali in Alaska, U.S. boasts unique names across nearly seven different Indigenous languages.

Mexico’s highest volcanoes also have a Romeo and Juliet-esque myth that links them. Popocatépetl (active volcano) and Iztaccíhuatl (dormant volcano) are presumed to be lovers, both of whom meet a tragic end. It’s said that the active volcano is avenging its beloved’s death to this day.

Far Beyond the Horizon

Traveling to the southernmost tip of the Earth, you might be surprised to learn that volcanoes even exist in Antarctica. Mount Sidley is the highest, dormant, snow-covered volcano found here.

The only dome on the entire highest mountains list is Dome Argus (13,428 ft or 4,093 m). This is the coldest place on the planet, dropping between -144°F to -133°F (-98°C to -90°C).

Dome Argus is also unique from another angle—it’s the only one on Antarctica with fabled origins, based off the Greek figure Argus, builder of the mythological hero Jason and the Argonauts’ ship. The remaining mountains here are named for scientists and supporters of various Antarctic expeditions.

Under Sea, and Outer Space

All these highest mountains are visible on land, but it’s possible that more secrets remain in the deep blue. The Hawaiian dormant volcano Mauna Kea doesn’t make this list due to its lower elevation above sea level, but it’s actually 33,500ft (10,200m) high from tip to peak—far taller than even Everest.

Everest is still really impressive, but it’s also only a fraction of the size of Olympus Mons, the highest mountain on Mars and in the solar system. New planets are also being discovered every year, presenting further possibilities.

Ultimately, this suggests we’ve not yet peaked at discovering the massive mountains which exist in—and out—of this world.