Earth Day beckons. The worldwide Extinction Rebellion protests continue, despite concerted efforts to silence them. Sir David Attenborough, 92, and Greta Thunberg, 16, have been passionate, and prominent, speakers for our threatened and increasingly fragile natural world, and the endangered species who cannot speak for themselves.

It’s becoming increasingly clear that the powers-that-be — the world’s major financial institutions, the oil- and gas industry and government policymakers — are going to pay lip service, and no more than that, to the idea that our children and grandchildren’s future is finished unless something is done, and done now, about our increasingly evident climate emergency.

These past few days, on the same weekend an exhausted, disoriented polar bear wandered into the isolated village of Tilichiki on Russia’s Kamchatka Peninsular, having floated some 700 km (450 miles) away from its home in the Arctic Circle on an ice floe, there was a remarkable discovery in the faraway Amazon rainforest.

The discovery was actually made a while ago, but has only now come to light following reports on BBC’s World News service and PBS News Hour in the US: Researchers from Washington State’s Pacific Northwest National Laboratory found a baseline of pure, pristine air over the Amazon, and is using it to show how we’re messing with climate, by comparing the pristine air to samples of “dirtied” air taken not so far away, over remote jungle towns and logging camps that are expanding rapidly throughout an area dubbed “the lungs of the Earth.”

A team of researchers discovered the pristine air — air that dates back to pre-Industrial times — by flying a specially fitted Gulfstream jet with specialized instruments designed to identify and record particles of air virtually unchanged since before Arthur Conan Doyle wrote The Lost World.

The Amazon rainforest covers some 6 million square km (2 million square miles) of the South American landmass. It produces so much carbon — and produces so much life-giving oxygen — that it is truly the last, best hope for humankind, and for planet Earth.

And yet, the city of Manaus, Brazil — population 2 million — lies in the heart of the rainforest, with all the overcrowding, environmental destruction and deleted natural resources that come with a city of that size.

This is the classic good-news/bad-news story. The good news is that, on this Earth Day, there remains at least one place on Earth where the air survives as if the human footprint had never happened. The bad news is that the researchers have discovered that human pollution is driving the acceleration of climate-changing particles — aerosols — much more quickly than previously thought. These particles are not just a driver of climate change. They can cause heart disease and damage our lungs and other organs, not just in the immediate area but halfway around the world.

The researchers’ results were published in the journal Nature Communications.

If there’s any good news in all this, it’s that science now has a baseline to create a new standard of what clean, pure air on Earth is supposed to be, and can be if we apply enough effort, energy and human brain power to solving our climate crisis.

As one of the lead researchers told PBS’s Seattle TV affiliate KCTS-9, “We can (now) look back at the Amazon and see how much we’ve been changing it, and how much we will continue to change it (if we don’t do something soon).”

The die is not cast — yet. But it’s getting closer. The urgency is real, and people need to know the truth.

https://phys.org/news/2019-03-uncommon-valuable-pristine-air-reveal.html

https://www.theguardian.com/environment/2019/apr/19/extinction-rebellion-may-be-our-last-chance

Yes, the numbers are sobering — as they should be. And while it can seem overwhelming — an estimated 18 million acres (7.3 million hectares) of forest felled, burned and ground into sawdust each year — there’s room for help. For another decade, anyway, if we’re to believe even the most pessimistic of climate scientists. The United Nations Food and Agriculture Organization (FOA) cites, as just one example, the case of Afghanistan, which has lost more than 70% of its forest cover in just the past two decades.

And so it goes. Logging. Overgrazing. Forest fires. Deliberate burning. Urbanization. Unchecked soybean farming, to provide cheap feed for cattle on ever-expanding cattle ranches. And so on.

One and a half acres of forest is cut down every second. Shrinking forest cover contributes to between 12% and 17% of annual greenhouse-gas emissions, according to the World Resources Institute. At the current rate of destruction, it will take less than a century to destroy all rainforests on Planet Earth — that is, if climate scientists are wrong when they say we have just 12 years to stop irreversible climate change.

There’s more.

The Amazon rainforest alone produces 20% of the world’s oxygen, but the newly elected national government in Brazil is committed to wholesale destruction, in the name of development and boosting local economies. Short-term thinking, in a world where more than 25,000 animal and plant species are expected to become extinct in just the next 25 years.

“Against stupidity, the Gods themselves battle in vain.”

There are things we can do, though, according to the website Conserve Energy Future.

The NGO Green Match named Conserve Energy Future (https://www.conserve-energy-future.com) one of the best green-energy websites for 2017, not so much for its dire predictions — though this is one problem that won’t be solved by just shutting our eyes and hoping it goes away — but for its practical how-to pointers on how nearly everyone can, if not save the planet exactly, slow down its destruction.

(It’s worth noting, for the record, that there are exposés online denouncing Conserve Energy founder Rinkesh Kukreja, such as an April, 2017 essay in medium.com headed “Credibility Becoming an Issue,” but these pointers are common-sense enough that they don’t need a scientific study to back them up. Sometimes, common sense is just that.)

• Use and re-use paper bags or, better yet, switch to canvas.

• Eat less beef. Cattle farming is one of the planet’s most destructive agricultural practices.

• Choose products that require little or no packaging.

• Support eco-friendly companies (easy enough to ascertain online). Likewise, boycott or simply shun those companies whose products actively encourage environmental degradation.

• Sign those online petitions, even if you suspect they have little effect. If nothing else, the old saw, “Not worth the paper they’re written on,” doesn’t lead to much deforestation if they’re not written on paper to begin with.

• Plant trees — in your garden, your backyard or with a local neighbourhood group that actively plants trees in nearby wilderness areas. “The future of the planet concerns all of us, and all of us should do what we can to protect it,” Kenya Nobel Peace laureate Wangari Maathai famously said. “As I told the foresters, and the women, you don’t need a diploma to plant a tree.” Lend a hand to save trees.

• Try to wean yourself off plastic. Collins English Dictionary named “single-use” as its Word of the Year, but that’s not a good thing: “Single-use plastics” drew unwanted attention across the UK following the airing of BBC’s Blue Planet II, in which presenter David Attenborough showed sea birds trying to feed bits of plastic to their newborn chicks, in remote regions of the ocean previously believed to be untouched by human presence.

Stay informed, and spread the word.

“The creation of a thousand forests is in one acorn,” Ralph Waldo Emerson said.

It’s never too late, until it is.

Journal

“Man is modifying the world so fast and so drastically that most animals cannot adapt to the new conditions. In the Himalaya as elsewhere there is a great dying, one infinitely sadder than the Pleistocene extinctions, for man now has the knowledge and the need to save the remnants of his past.”

— Peter Matthiessen