Yearly Archives: 2018

New app helps African farmers find the right tree

A new web-based application now makes it possible for small-scale farmers to see the African forests for the trees.

Known as the Vegetationmap4Africa, the app enables users to identify vegetation as a way to better understand and sustainably manage landscapes while also ensuring a diverse mixture of species.

“The goal of the app is to select ecologically-suitable tree species, ‘the right tree for the right place and purpose,’ and their best seed sources for forestry, agroforestry or ecological restoration projects and for millions of small-holder agroforesters,” said Roeland Kindt, a senior ecologist at the World Agroforestry Centre (ICRAF).

For example, a farmer who wants to plant seeds can refer to the app, which also works offline, to determine which will work best on a chosen parcel of land. The app includes a fact sheet showing how well a seed will grow under different conditions such as erosion or drought. A spreadsheet also allows users to share information and make recommendations.

“New roll-outs of the app are inspired on feedback from users on the best balance between user-friendliness and the amount of information,” Kindt said.

The user-friendly technology comes as communities worldwide are grappling with drastic deforestation. Global Forest Watch reported 40 football fields a minute, or 39 million acres of tropical forests in Africa and Southeast Asia were lost in 2017. Meanwhile, in Africa, forests have been cleared for commercial purposes such as palm oil plantationscocoa production and furniture, or for fuelwood, mineral extraction and small farming. At the same time, climate change has contributed to loss of forest cover, with drought, desertification, and other environmental pressures eroding woodlands.

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Originally published on the Global Landscapes Forum website.

Bringing Farming Back to Nature

Farming the land as if nature doesn’t matter has been the model for much of the Western world’s food production system for at least the past 75 years. The results haven’t been pretty: depleted soil, chemically fouled waters, true family farms all but eliminated, a worsening of public health and more. But an approach that combines innovation and tradition has emerged, one that could transform the way we grow food. It’s called agroecology, and it places ecological science at the center of agriculture. It’s a scrappy movement that’s taking off globally.

Representatives of more than 70 countries gathered in Rome recently to discuss this approach to creating a healthier and more sustainable food system. (We were there.) It was an invigorating and encouraging gathering, made more so when José Graziano da Silva, the director general of the United Nation’s Food and Agriculture Organization, called for “transformative change toward sustainable agriculture and food systems based on agroecology.”

Agroecology isn’t rocket science. It simply takes full advantage of nature’s assets, drawn from the farm itself and surrounding ecosystems, to grow food. But in a $5 trillion food system dominated by ever-growing corporate giants, an endorsement from the U.N.’s top food official for farmers to use compost as fertilizer, to take steps to attract pollinators as well as predators that consume agricultural pests and to grow complementary crops for soil health is a significant poke in the eye to a cynical, essentially self-regulating agriculture industry. It’s an industry that would have us believe that we need rocket science to grow a carrot.

Much of the world is waking up to the costs of the industrial approach that defines most of American agriculture, with its addiction to chemicals and monoculture. A new reckoning known as true cost accounting is putting dollar figures on industrial agriculture’s contribution to soil erosion, climate change and public health. At the same time, more and more countries — pushed by networks of small and medium-size farmers like La Via Campesina — are actively shifting to policies and investments that support agroecological food systems.

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Originally published by New York Times.

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India is no longer home to the largest number of poor people in the world. Nigeria is.

It is a distinction that no country wants: the place with the most people living in extreme poverty.

For decades, India remained stubbornly in the top spot, a reflection of its huge population and its enduring struggle against poverty.

Now, new estimates indicate that Nigeria has knocked India out of that position, part of a profound shift taking place in the geography of the world’s poorest people.

According to a recent report from the Brookings Institution, Nigeria overtook India in May to become the country with the world’s highest number of people living in extreme poverty, which is defined as living on less than $1.90 a day. The threshold captures those who struggle to obtain even basic necessities such as food, shelter and clothing, and takes into account differences in purchasing power between countries.

The Brookings report was based on estimates generated by the World Poverty Clock, a model created to track progress against poverty in real time. As of Monday, its figures showed that India had 70.6 million people living in extreme poverty, while Nigeria had 87 million.

What’s more, the gap is widening: The number of people living in extreme poverty in India is falling while the opposite is true in Nigeria, where the population is growing faster than its economy. Extreme poverty rises in Nigeria by six people each minute, according to calculations by the World Poverty Clock. Meanwhile, the number of extreme poor in India drops by 44 people a minute.

“It’s a good news story for India, coupled with some caveats, and it’s a real wake-up call for the African continent,” said Homi Kharas, director of the global economy and development program at the Brookings Institution.

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Originally published by Washington Post.

Losing Earth: The Decade We Almost Stopped Climate Change

The world has warmed more than one degree Celsius since the Industrial Revolution. The Paris climate agreement — the nonbinding, unenforceable and already unheeded treaty signed on Earth Day in 2016 — hoped to restrict warming to two degrees. The odds of succeeding, according to a recent study based on current emissions trends, are one in 20. If by some miracle we are able to limit warming to two degrees, we will only have to negotiate the extinction of the world’s tropical reefs, sea-level rise of several meters and the abandonment of the Persian Gulf. The climate scientist James Hansen has called two-degree warming “a prescription for long-term disaster.” Long-term disaster is now the best-case scenario. Three-degree warming is a prescription for short-term disaster: forests in the Arctic and the loss of most coastal cities. Robert Watson, a former director of the United Nations Intergovernmental Panel on Climate Change, has argued that three-degree warming is the realistic minimum. Four degrees: Europe in permanent drought; vast areas of China, India and Bangladesh claimed by desert; Polynesia swallowed by the sea; the Colorado River thinned to a trickle; the American Southwest largely uninhabitable. The prospect of a five-degree warming has prompted some of the world’s leading climate scientists to warn of the end of human civilization.

Is it a comfort or a curse, the knowledge that we could have avoided all this?

Because in the decade that ran from 1979 to 1989, we had an excellent opportunity to solve the climate crisis. The world’s major powers came within several signatures of endorsing a binding, global framework to reduce carbon emissions — far closer than we’ve come since. During those years, the conditions for success could not have been more favorable. The obstacles we blame for our current inaction had yet to emerge. Almost nothing stood in our way — nothing except ourselves.

Nearly everything we understand about global warming was understood in 1979. By that year, data collected since 1957 confirmed what had been known since before the turn of the 20th century: Human beings have altered Earth’s atmosphere through the indiscriminate burning of fossil fuels. The main scientific questions were settled beyond debate, and as the 1980s began, attention turned from diagnosis of the problem to refinement of the predicted consequences. Compared with string theory and genetic engineering, the “greenhouse effect” — a metaphor dating to the early 1900s — was ancient history, described in any Introduction to Biology textbook. Nor was the basic science especially complicated. It could be reduced to a simple axiom: The more carbon dioxide in the atmosphere, the warmer the planet. And every year, by burning coal, oil and gas, humankind belched increasingly obscene quantities of carbon dioxide into the atmosphere.

Why didn’t we act? A common boogeyman today is the fossil-fuel industry, which in recent decades has committed to playing the role of villain with comic-book bravado. An entire subfield of climate literature has chronicled the machinations of industry lobbyists, the corruption of scientists and the propaganda campaigns that even now continue to debase the political debate, long after the largest oil-and-gas companies have abandoned the dumb show of denialism. But the coordinated efforts to bewilder the public did not begin in earnest until the end of 1989. During the preceding decade, some of the largest oil companies, including Exxon and Shell, made good-faith efforts to understand the scope of the crisis and grapple with possible solutions.

Nor can the Republican Party be blamed. Today, only 42 percent of Republicans know that “most scientists believe global warming is occurring,” and that percentage is falling. But during the 1980s, many prominent Republicans joined Democrats in judging the climate problem to be a rare political winner: nonpartisan and of the highest possible stakes. Among those who called for urgent, immediate and far-reaching climate policy were Senators John Chafee, Robert Stafford and David Durenberger; the E.P.A. administrator, William K. Reilly; and, during his campaign for president, George H.W. Bush. As Malcolm Forbes Baldwin, the acting chairman of the president’s Council for Environmental Quality, told industry executives in 1981, “There can be no more important or conservative concern than the protection of the globe itself.” The issue was unimpeachable, like support for veterans or small business. Except the climate had an even broader constituency, composed of every human being on Earth.

It was understood that action would have to come immediately. At the start of the 1980s, scientists within the federal government predicted that conclusive evidence of warming would appear on the global temperature record by the end of the decade, at which point it would be too late to avoid disaster. More than 30 percent of the human population lacked access to electricity. Billions of people would not need to attain the “American way of life” in order to drastically increase global carbon emissions; a light bulb in every village would do it. A report prepared at the request of the White House by the National Academy of Sciences advised that “the carbon-dioxide issue should appear on the international agenda in a context that will maximize cooperation and consensus-building and minimize political manipulation, controversy and division.” If the world had adopted the proposal widely endorsed at the end of the ’80s — a freezing of carbon emissions, with a reduction of 20 percent by 2005 — warming could have been held to less than 1.5 degrees.

A broad international consensus had settled on a solution: a global treaty to curb carbon emissions. The idea began to coalesce as early as February 1979, at the first World Climate Conference in Geneva, when scientists from 50 nations agreed unanimously that it was “urgently necessary” to act. Four months later, at the Group of 7 meeting in Tokyo, the leaders of the world’s seven wealthiest nations signed a statement resolving to reduce carbon emissions. Ten years later, the first major diplomatic meeting to approve the framework for a binding treaty was called in the Netherlands. Delegates from more than 60 nations attended, with the goal of establishing a global summit meeting to be held about a year later. Among scientists and world leaders, the sentiment was unanimous: Action had to be taken, and the United States would need to lead. It didn’t.

The inaugural chapter of the climate-change saga is over. In that chapter — call it Apprehension — we identified the threat and its consequences. We spoke, with increasing urgency and self-delusion, of the prospect of triumphing against long odds. But we did not seriously consider the prospect of failure. We understood what failure would mean for global temperatures, coastlines, agricultural yield, immigration patterns, the world economy. But we have not allowed ourselves to comprehend what failure might mean for us. How will it change the way we see ourselves, how we remember the past, how we imagine the future? Why did we do this to ourselves? These questions will be the subject of climate change’s second chapter — call it The Reckoning. There can be no understanding of our current and future predicament without understanding why we failed to solve this problem when we had the chance.

That we came so close, as a civilization, to breaking our suicide pact with fossil fuels can be credited to the efforts of a handful of people, among them a hyperkinetic lobbyist and a guileless atmospheric physicist who, at great personal cost, tried to warn humanity of what was coming. They risked their careers in a painful, escalating campaign to solve the problem, first in scientific reports, later through conventional avenues of political persuasion and finally with a strategy of public shaming. Their efforts were shrewd, passionate, robust. And they failed. What follows is their story, and ours.

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Originally published by the New York Times

The great African regreening: millions of ‘magical’ new trees bring renewal

Rain had come to nearby villages, but not yet to Droum in south-east Niger. The sand under its stately trees looked completely barren, but Souley Cheibou, a farmer in his 60s, was not worried. He crooked a finger, fished in the sand, and brought out a millet seed. In a week or two, this seed would germinate and sprout, and soon the whole field would be green.

Cheibou’s peace of mind stemmed from the trees encircling him, which had been standing long before he was born. Despite appearances, these were not any old acacias. They were gao trees – known as winterthorns in English – with unique, seemingly magical powers.

From the peanut basin of Senegal to the Seno plains of Mali, to Yatenga, formerly the most degraded region of Burkina Faso, and as far south as Malawi: gaos are thriving in Africa. And over the past three decades, the landscape of southern Niger has been transformed by more than 200m new trees, many of them gaos. They have not been planted but have grown naturally on over 5m hectares of farmland, nurtured by thousands of farmers.

According to scientists, what has happened in Niger – one of the world’s poorest countries – is the largest-scale positive transformation of the environment in the whole of Africa. This is not a grand UN-funded project aiming to offset climate change. Small-scale farmers have achieved it because of what the trees can do for crop yields and other aspects of farming life.

“It’s a magic tree, a very wonderful tree,” said Abasse Tougiani of Niger’s National Institute of Agricultural Research, who has travelled all over Niger studying Faidherbia albida – the gao’s Latin name.

Shielded from the sun, crops planted under the canopy of a tree usually do not do well in the short term, although there can be longer-term benefits. That’s one reason why many west African rainforests have been decimated. But with gaos, it’s the other way round. The root system of the gao is nearly as big as its branches, and unusually it draws nitrogen from the air, fertilising the soil. And unlike other trees in the area, gao tree leaves fall in the rainy season, allowing more sunlight through to the crops at a key moment.

Used along with mineral fertilisers, crop yields double under gaos, and the gao-nourished soil holds water better, ensuring a better crop in drought years.

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Originally published by The Guardian

Earth has more trees now than 35 years ago

Despite ongoing deforestation, fires, drought-induced die-offs, and insect outbreaks, the world’s tree cover actually increased by 2.24 million square kilometers — an area the size of Texas and Alaska combined — over the past 35 years, finds a paper published in the journal Nature. But the research also confirms large-scale loss of the planet’s most biodiverse ecosystems, especially tropical forests.

The study, led by Xiao-Peng Song and Matthew Hansen of the University of Maryland, is based on analysis of satellite data from 1982 to 2016. The researchers broke land cover into three categories: tall vegetation consisting of trees of at least five meters (16 feet) in height; short vegetation under five meters in height including shrubs, grass, and agricultural crops; and “bare ground”, including urban areas, sand, tundra, and rock. While the classification may seem simplistic, powerful conclusions can be drawn from the data, including assessing agricultural expansion, climate-driven expansion and contraction of ecosystems, and forest clearing and recovery.

“The results of this study reflect a human-dominated Earth system,” the researchers write. “Direct human action on landscapes is found over large areas on every continent, from intensification and extensification of agriculture to increases in forestry and urban land uses, with implications for the maintenance of ecosystem services.”

Overall, the study found that tree cover loss in the tropics was outweighed by tree cover gain in subtropical, temperate, boreal, and polar regions. Tree cover gain is being driven by agricultural abandonment in parts of Europe, Asia, and North America; warming temperatures that are enabling forests to move poleward; and China’s massive-tree planting program. Tree cover is also increasing globally in montane areas.

The biggest gains in tree cover occurred in temperate continental forest (+726,000 square kilometers), boreal coniferous forest (+463,000 square kilometers), subtropical humid forest (+280,000 square kilometers). Russia (+790,000 square kilometers), China (+324,000 square kilometers), and the United States (+301,000 square kilometers) experienced the largest increase in tree cover among countries during the period.

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Originally published by Mongabay.