Global Issues and Perspectives

Ocean Acidification Leaves Mollusks Naked and Confused

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Chilean intertidal carnivorous crab (Acanthocyclus hassleri)

Climate change is making oceans warmer and more acidic…expect the worst

By Stephen Leahy

When the carbon dioxide absorbed by the oceans dissolves in seawater, carbonic acid is formed and calcium carbonate, vital for the formation of the skeletons and shells of many marine organisms, becomes scarcer.

MONTEREY, California, Oct 2 2012 (IPS)

Climate change will ruin Chilean sea snails’ ability to sniff out and avoid their archenemy, a predatory crab, according to Chilean scientists who presented their findings at an international science symposium here.

Researchers from Australia also revealed that as the oceans become more and more acidic, some fish become hyperactive and confused, and move towards their predators instead of trying to escape.

“The conditions in oceans are changing 100 times faster than at any time in the past,” said Jean-Pierre Gattuso, a marine biologist with CNRS-INSU and the Laboratoire d’Océanographie de Villefranche in France.

Climate change is making oceans warmer and more acidic. “We are beginning to understand what will happen. I think we can expect the worst,” Gattuso told Tierramérica*.

Gattuso is one of nearly 600 scientists from around the world who presented their research on Sep. 24-27 at the Third International Symposium on the Ocean in a High-CO2 World: Ocean Acidification in Monterey, California.

Researchers discovered only 10 years ago that burning fossil fuels like coal, oil and gas has made the oceans about 30 percent more acidic since the beginning of the Industrial Revolution. Continue reading →

Double Food Production in 10 Years AND Reduce Global Warming

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Greening of the Sahel desert region with eco-ag

Yields went up 214 percent in 44 projects in 20 countries in sub-Saharan Africa

“If we don’t radically transform the direction of the global food system we will never feed the billion who are hungry,” De Shutter warns.

“Nor will we be able to feed ourselves in the future.”

By Stephen Leahy

UXBRIDGE, Feb 8, 2011 (IPS)

Eco-farming could double food production in entire regions within 10 years while mitigating climate change, according to a new U.N. report released Tuesday in Geneva.

An urgent transformation to ‘eco-farming’ is the only way to end hunger and face the challenges of climate change and rural poverty, said Olivier De Schutter, U.N. Special Rapporteur on the right to food, following the presentation of his annual report focusing on agroecology and the right to food to the U.N. Human Rights Council.

“Agroecology mimics nature not industrial processes. It replaces the external inputs like fertiliser with knowledge of how a combination of plants, trees and animals can enhance productivity of the land,” De Schutter told IPS.

“Yields went up 214 percent in 44 projects in 20 countries in sub-Saharan Africa using agro-ecological farming techniques over a period of 3 to 10 years… far more than any GM [genetically modified] crop has ever done.”

Other recent scientific assessments have shown that small farmers in 57 countries using agro-ecological techniques obtained average yield increases of 80 percent. Africans’ average increases were 116 percent.

“Today’s scientific evidence demonstrates that agroecological methods outperform the use of chemical fertilisers in boosting food production in regions where the hungry live,” De Schutter said. [Video Interviews with De Schutter]


Agroecology applies ecological science to the design of agricultural systems. It enhances soil productivity and protects crops against pests by relying on the natural elements. Continue reading →

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This is an analysis piece from 2011. I will be interviewing experts around the world for a new article on this year’s record breaking melt of Arctic ice. — Stephen

Stephen's avatarStephen Leahy, International Environmental Journalist

Rapidly warming planet biggest threat to all nations

Military budget more than enough to convert USA to 100% renewable energy

Analysis by Stephen Leahy

UXBRIDGE, Canada, Sep 15, 2011 (IPS)

All the analysis and commentary about safety and security on the tenth anniversary of 9/11 ignored by far the biggest ongoing threat to global security: climate change.

Just days before Sunday’s commemoration of the attacks, German scientists pointed to yet another smoking gun of climate change: the Arctic sea ice reached a new historic minimum ice extent.

The rapidity with which the planet is losing its northern ice cap continues to astonish experts. The defrosting northern pole is one of the prime drivers of Earth’s climate system and is changing global weather patterns in unpredictable ways.

The Arctic ice melt is also accelerating the rate of climate change beyond what humanity is doing with every barrel of oil, tonne of…

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Global Forest Decline with Warming Temperatures Scientists Warn

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Image

“Forests diebacks are taking place all around the world. The evidence is quite sobering,” said tropical biologist Daniel Nepstad of IPAM in Belem, Brazil.

This reinforces the urgent need to reduce emissions of fossils fuels and to develop a global land strategy to turn sources of CO2 into sinks for CO2, he said.

“Most of the evidence shows climate change is speeding up. Meanwhile political action on climate is slowing down,” Nepstad added.

–From a previous post on how the loss of trees to deforestation, drought and disease is accelerating climate change.

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Last week the Japanese govt injected $billions into Tepco, owners of the damaged Fukushima nuke plant that still poses a huge threat. Many more billions are needed to make it safe.

Stephen's avatarStephen Leahy, International Environmental Journalist

By Stephen Leahy

UXBRIDGE, Canada, May 6, 2011 (IPS)

The nuclear energy industry only exists thanks to what insurance experts call the “mother of all subsidies”, and the public is largely unaware that every nuclear power plant in the world has a strict cap on how much the industry might have to pay out in case of an accident.

In Canada, this liability cap is an astonishingly low 75 million dollars. In India, it is 110 million dollars and in Britain 220 million dollars. If there is an accident, governments – i.e. the public – are on the hook for all costs exceeding those caps.

Japan has a higher liability cap of 1.2 billion dollars, but that is not nearly enough for the estimated 25 to 150 billion dollars in decommissioning and liability costs for what is still an ongoing disaster at its Fukushima Daiichi nuclear plant. Seven weeks…

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Wealthy Countries and Investors Buying Up Farmland in Poor Countries

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Lopiso Lagebo, 25, comes from Kambata, a small town 800km away from Metahar. He starts working at 0500, cuts up to 5 tons (5,000 kg) of sugar cane a day and earns $0.8. The company recruits most of the work force around his home town, where land shortage drives the workers to emigrate. Caption and Photo: Alfredo Bini/Cosmos  http://www.facebook.com/alfredobini

[I wrote this article three years ago revealing a global land grab by rich investors that is now estimated to be more than 200 million hectares – my recent update here – Stephen]

By Stephen Leahy*

ANCHORAGE, Alaska, USA, May 5 , 2009 (Tierramérica)

More than 20 million hectares of farmland in Africa and Latin America are now in the hands of foreign governments and companies, a sign of a global “land grab” that got a boost from last year’s food crisis.

Rich countries that are short on land or water at home are looking to secure food-producing lands elsewhere as a way to ensure food security for their populations, said Joachim von Braun, director of the International Food Policy Research Institute (IFPRI).

“There is a major lack of transparency in these land deals,” von Braun said in a telephone press conference from Washington.

The IFPRI study, “‘Land Grabbing’ by Foreign Investors in Developing Countries,” by von Braun and Ruth Meinzen-Dick, which was presented last week, estimates that 15 to 20 million hectares have been acquired or are in the process of being sold.

Von Braun pointed out that this is equivalent to about 25 percent of all the farmland in Europe.

Because hard data is difficult to come by – the study was based primarily on information from press reports – IFPRI conservatively estimates that the deals represent 20 to 30 billion dollars being invested by China, South Korea, India and the Gulf States, mainly in Africa.

“About one-quarter of these investments are for biofuel plantations,” von Braun said.  Continue reading →

Revealed: In Acidic Oceans Sunlight Kills Planet’s Most Important Organism — Marine Algae

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A number of marine diatom cells (Pleurosigma), which are an important group of phytoplankton in the oceans.
Credit: Michael Stringer

“There’s a synergistic effect between increased ocean acidity and natural light”

“It’s clear we are conducting a giant experiment on the planet and we don’t know what we are doing.”

 By Stephen Leahy

UXBRIDGE, Canada, May 8, 2012 (IPS)

Without major reductions in the use of fossil fuels, sunlight will kill an unknown number of ocean phytoplankton, the planet’s most important organism, a new study reports this week.

Not only are phytoplankton, also known as marine algae, a vital component in the ocean’s food chain, they generate at least half of the oxygen we breathe.

In the not so distant future, sunlight, the very source of life for phytoplankton, will likely begin to kill them because of the ocean’s increasing acidity, researchers from China and Germany have learned.

“There’s a synergistic effect between increased ocean acidity and natural light,” says Ulf Riebesell of the Helmholtz Centre for Ocean Research in Kiel, Germany.

Riebesell added that it was also possible “phytoplankton could adapt”.

Researchers were surprised to discover that diatoms, one of the most important and abundant types of phytoplankton, fared very badly during shipboard experiments conducted by co-author Kunshan Gao, from the State Key Laboratory of Marine Environmental Science at Xiamen University, Xiamen China.

Previous experiments in labs like Riebesell’s found that diatoms actually did better in high-acid seawater, unlike most other shell- forming plankton. Burning fossil fuels has made the oceans about 30 percent more acidic researchers discovered less than 10 years ago. Oceans absorb one third of the carbon dioxide (CO2) emitted from using fossil fuels.

The good news is this has slowed the rate of global warming. The bad news is oceans are now more acidic and it will get worse as more CO2 is emitted. This is basic, well-understood ocean chemistry.  Continue reading →

Standing Up for the Planet and the Future: Time to Stop Using Fossil Fuels

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Coal power plant – Alberta

+15,000 temperature records already broken in the US this year 

By Stephen Leahy

UXBRIDGE, Canada, May 4, 2012 (IPS)

What are you doing on Saturday? Peter Nix, a retiree, will be standing on a railway track on Canada’s west coast blocking a coal train destined to ship U.S. and Canadian coal to Asia.

Nix will be joined by dozens of people near White Rock, British Columbia on May 5. They will be in good company as tens of thousands of people around the world participate in global day of action to “connect the dots” between climate change and extreme weather.

“There will be at least 1,200 actions in more than 100 countries,” says Jamie Henn, communications director for 350.org, a U.S.-based environmental group.

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There’s been a general perception that climate change is a future problem but with all the extreme weather disasters and weather records the public is being to realise that climate change is here, says Henn.

“Recent opinion surveys show the more than 60 percent of the U.S. public are connecting extreme weather to climate change,” Henn told IPS.

The U.S. public is not wrong, say scientists. 

“All weather events are affected by climate change because the environment in which they occur is warmer and moister than it used to be,” Kevin Trenberth, senior scientist at the U.S. National Center for Atmospheric Research, told IPS previously.  Continue reading →

Trashing the Oceans: 3 to 6 X More Trash Than Plankton – ‘Using Oceans as Universal Sewer’ — Cousteau

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This is a repost from last year. Sad to see  little progress on this issue. — Stephen

“There is no reason for delay. Governments and industry need to take action and people have to stop pointing fingers at each other and get on with it.”

California nearly became the first U.S. state to ban plastic bags, but a multi-million-dollar lobby effort by industry killed the proposed legislation

By Stephen Leahy

HONOLULU, Hawaii, U.S., Mar 28, 2011 (IPS)

Every day, billions of plastic bags and bottles are discarded, and every day, millions of these become plastic pollution, fouling the oceans and endangering marine life.

No one wants this, but there is wide disagreement about how to stop it.

“Every time I stick my nose in the water, I am shocked. I see less and less fish and more and more garbage,” said Jean-Michel Cousteau, son of the legendary marine ecologist Jacques Cousteau, who has spent four decades making documentaries and educating people about the oceans.

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On trips to the remote and uninhabited northwestern Hawaiian Islands, Cousteau found miles and miles of plastic bottles, cigarette lighters, television tubes, spray cans, broken toys, and thousands of other pieces of plastic on the beaches and thousands of tonnes of derelict fishing nets in the reefs.

“We are using the oceans as a universal sewer,” he told some 440 participants from the plastics manufacturing, food and beverage sectors, environmental organisations, scientists and policy-makers from over 35 countries at the Fifth International Marine Debris Conference in Honolulu, Hawaii, which ended Mar. 25. Continue reading →

Eliminate GDP and Economic Growth to Create the Real Green Economy Indigenous Peoples Say

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Wind-solar electricity generation built by indigenous Telengits community in Russia's Altai Mountains. Photo: Foundation for Sustainable Development of Altai

Wind-solar electricity generation built by indigenous Telengits community in Russia’s Altai Mountains. Photo: Foundation for Sustainable Development of Altai

by Stephen Leahy

First published at National Geographic’s NewsWatch

The planet is in peril, 3,000 scientists and other experts concluded at the recent Planet Under Pressure conference in London. Climate change, overuse of nitrogen and loss of biodiversity are just three of the perils threatening to make much of our home uninhabitable.

World leaders will meet in Rio de Janeiro June 20-22 to address this at the Rio+20 Conference, 20 years after the very first Earth Summit.

Rio+20 needs to be the moment in human history when the nations of the world come together to find ways to ensure ‘the very survival of humanity,’ environmentalists and scientists have said.

A “Green Economy” will be one of the main ideas under discussion in Rio. The idea is to make a transition to an economic system that maximizes human well-being while operating within the planet’s environmental limits. Exactly how this could be accomplished has yet to be defined.

The current economic system rewards those who exploit and destroy nature, said Vicky Tauli-Corpuz, Executive Director, Tebtebba (Indigenous Peoples’ International Centre for Policy Research and Education).

The current system hinders and even blocks Indigenous peoples from practicing their traditional ways of living that actually represent “a real green economy” that can be sustainable, achieve well being and are climate-friendly, said Tauli-Corpuz, a member of the indigenous Kankana-ey Igorot community in the Philippines.

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Continue reading →