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Pope Francis reads the Catholic Climate Petition with GCCM representatives Tomás Insua from Argentina and Allen Ottaro from Kenya. Photo: Fotografia Felici.

Pope Francis endorses climate action petition to world leaders

The Ecologist

15th May 2015

The Pope has urged Catholics around the world to sign a new faith-inspired petition calling on world leaders to limit global warming to 1.5C, shortly after declaring that there is 'clear, definitive and ineluctable ethical imperative to act' on climate change. more...
Scientists had thought that Arctic rivers like the Kolyma in Siberia carry dissolved carbon from melting permafrost to the oceans. They were wrong - it's all emitted to the atmosphere as CO2. Photo: Магадан via Flickr (CC BY-NC-SA).

Thawing Arctic carbon threatens 'runaway' global warming

Tim Radford

14th May 2015

Arctic warming is releasing ancient organic matter that's been deep-frozen for millennia, writes Tim Radford. And now scientists have discovered its fate: within weeks it's all digested by bacteria and released to the atmosphere as CO2 - with potentially catastrophic impacts on climate. more...
The Middelgrunden marine wind farm near Copenhagen is a wonder of 'green' energy technology. But even this has its toxic footprint, in the mines that produce the neodymium that's indispensable to their operation. Photo: Andreas Klinke Johannsen via Flickr

Renewable energy alone cannot reverse global warming or make a sustainable world

Pete Dolack

25th May 2015

The renewable power boom is excellent news for people and planet, writes Pete Dolack. But let's not get carried away: much energy that claims to be 'renewable; like biomass and big hydro, is no such thing. And greening our energy is just one of many steps to a sustainable world. The greatest challenges - like tackling the monster of infinite 'growth' - all lie ahead. more...
Dead fish on the beach at Cape San Blas, Florida, after a 'red tide' event in the Gulf of Mexico. Photo: Judy Baxter via Flickr (CC BY-NC-SA).

Ocean 'dead zones' are spreading - and that spells disaster for fish

Lee Bryant

9th April 2015

Oxygen levels in our oceans are falling, writes Lee Bryant, producing growing 'dead zones' where only the hardiest organisms can survive. The causes are simple: pollution with nutrient-rich wastes, and global warming. But the only solution is to stop it happening - or wait for 1,000 years. more...
NASA image of the Arctic sea ice on March 6, 2010. Image: NASA / Goddard Space Flight Center Scientific Visualization Studio; Blue Marble data courtesy of Reto Stockli (NASA/GSFC), via Flickr (CC BY 2.0).

Coming soon: the 'Big Heat'

Nafeez Ahmed

3rd March 2015

Global warming has been on vacation for a few years, writes Nafeez Ahmed. But that's only because the excess heat - two Hiroshima bombs-worth every second - has been buried in the deep ocean. But within a few years that's set to change, producing a huge decade-long warming surge, focused on the Arctic, that could overwhelm us all. more...
Global average temperature anomaly 1850-2015. Image: WMO.

WMO: 2014 was hottest year on record

The Ecologist

3rd February 2015

The World Meteorological Organization has ranked 2014 as the hottest year on record. And it's no flash in the pan: 14 of the 15 hottest years have been in the 21st century, a powerful indication of warming trend. more...
Photo: Scott Wallace / World Bank via Flickr, (CC BY-NC-ND).

Warmer world threatens wheat shortages

Paul Brown

19th January 2015

Just one degree of global warming could cut wheat yields by 42 million tonnes worldwide, around 6% of the crop, writes Paul Brown - causing devastating shortages of this staple food. more...
Eocene fauna of North America, on a 1964 mural made for the US government-owned Smithsonian Museum. Photo: Jay Matternes / Wikimedia Commons.

Sudden global warming 55m years ago was much like today

David Bond

5th January 2014

The Earth's current warming is looking similar to what took place 55 million years ago, writes David Bond. And if it works out that way, the news is good: we may avoid a mass extinction. On the other hand, the poles will melt away completely, and it will take hundreds of thousands of years for Earth to get back to 'normal'. more...
Finland's lakes are freezing later in the autumn, and melting later in the spring. Photo: Dennis Stauffer via Flickr CC-BY.

Rapid Arctic warming is spreading south

Alex Kirby

26th December 2014

Rising temperatures in the Arctic are reaching further south to the lakes and forests of Finland, writes Alex Kirby. But the warming is not affecting summer temperatures - it's concentrated into the colder months, causing a shorter, less severe winter. more...
An iceberg floating in the Amundsen Sea, where glaciers are shedding ice faster than in any other part of Antarctica. Photo: NASA / Jane Peterson via Wikimedia Commons.

Antarctica: warming ocean trebles glacial melt

Tim Radford

17th December 2014

As temperatures rise in the Southern Ocean, warmer currents are eroding the Antarctic ice sheet from below, writes Tim Radford - causing the melting rate to treble in two decades to 83 billion tonnes a year. more...
The SPICE project will investigate the release of small particles into the stratosphere to cool the Earth by reflecting a few percent of incoming solar radiation. Photo: Hugh Hunt CC BY-SA 3.0.

What's worse than geoengineering the climate?

Nick Breeze

23rd December 2014

Film maker Nick Breeze has conducted a series of interviews with experts on 'geo-engineering' to forestall runaway global warming. Here he presents the distilled wisdom from his meetings - and concludes that we should at least be experimenting with the techniques, and studying their impacts. more...
John Nissen speaking at AMEG's COP20 press conference. Photo: still from video on unfccc6.meta-fusion.com/ .

The melting Arctic - John Nissen's emergency call to action

Tomás d'Ornellas

15th December 2015

The Earth faces an imminent crisis caused by runaway Arctic warming. So says climate campaigner John Nissen, who travelled to COP20 in Lima to impress the dangers on delegates - and urge them to emergency action to cool the Arctic before it's too late. Tomás d'Ornellas, editor of Tecnews.pe, met him there ...
more...

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Coming to honeybees in North America and Europe, a new parasite helped on its way by warmer summers. Photo: Smudge 9000, CC BY-SA.

Bee crisis: warmer summers will help new parasite

Robert Paxton

30th December 2014

An exotic parasite is spreading through the world's honey bees and global warming is making it worse, writes Robert Paxton. A new study that shows it will soon be causing widespread colony collapse in North America and Europe. more...
This record snowfall is what the melting Arctic brought to Cheektowaga, New York yesterday, 20th November 2014. Photo: Anthony Quintano via Flickr.

Global warming - you must be joking! How melting Arctic ice is driving harsh winters

Nick Breeze

21st November 2014

The very least 'global warming' could do for us is to give us warmer winters, right? Wrong, writes Nick Breeze, who met climate scientist and meteorologist Jennifer Francis in his attempt to understand the complex interactions of jet stream, polar vortex, the melting Arctic, and the extreme snowfall that's hitting the northeast US right now. more...
We have the technology - but which? IPCC chairman Rajendra Pachauri. Photo: IPCC Photo / David Plas, via Flickr, © Belspo / Nevens.

IPCC: rapid emissions cuts vital to stop worst impacts of climate change

Damian Carrington / The Guardian

3rd November 2014

The IPCC's most important ever assessment of global warming warns that the world must cut its carbon emissions must be cut sharply and soon, writes Damian Carrington - and the cost is affordable. But in fact, emissions are rising at record levels, and the IPCC's strong support for unproven-at-scale CCS technology will leave many mystified. more...
Getting warmer far faster than thought - the Atlantic Ocean at Cape Cross, Namibia. Photo: jbdodane via Flickr.

Experts 'stunned' at how fast oceans are warming

Mike G / SeSmogBlog

23rd October 2014

Southern hemisphere oceans are warming at double the expected rate, a new study has found. This may explain why surface warming has slowed over the last decade - the oceans have absorbed the 'missing' heat. more...
These bananas in India are grown for their edible seed as well as their flesh. To increase food security in a warming world, we must increase the diversity of our food crops. Photo: VitaminGreen via Flickr.

In a warming world, food security means crop diversity

Sayed Azam-Ali

10th October 2014

The global homogenisation of food carries costs, writes Sayed Azam-Ali - notably the world's the increasing dependence on just a few 'elite crops', creating a precarious food system vulnerable to climate change. We must diversify our diets, and the crops that that feed us. more...
An intensive feedlot for beef cattle - a key stage in the US's amazingly high emissions from beef production. Photo: Socially Responsible Agricultural Project via Flickr.

The Carbon Underground: reversing global warming

Ronnie Cummins / Organic Consumers Association

21st September 2014

As millions join in climate marches and other actions around the world, writes Ronnie Cummins, the 'mainstream' focus on energy is missing the 55% of emissions that come from mismanaged land and destroyed forests. The key is to replace industrial agriculture worldwide with productive, regenerative organic farming that puts carbon back in the soil. more...
The end of fossil fuel emissions is not the end of global warming! Florida Power & Light's smokestacks come down at Riviera Beach. Photo: Kim Seng via Flickr.

The end of fossil fuels is not the end of global warming

Andrew Lockley

17th September 2014

Of course we must quit burning fossil fuels and welcome a renewable future, writes Andrew Lockley. But that's not going to stop the Earth from warming, indeed the reverse. So ... we need some tricks up our sleeve to deal with it - in a word, geoengineering. Because it will save our lives, and our planet. more...
CIAT cassava specialist Dr. Tin Maung Aye studies cassava crops in NE Thailand, affected by pest and disease outbreaks. Photo: Neil Palmer (CIAT) / Wikimedia Commons.

Farm pests' global advance threatens food security

2nd September 2014

Tim Radford

Agricultural pests - viruses, bacteria, fungi, blights, mildews, rusts, beetles, nematodes, flies, mites, spiders and caterpillars - are spreading thanks to trade, travel and global warming, writes Tim Radford. The world faces a dire future of increased crop losses and growing insecurity. more...
The Aedes aegypti mosquito - vector for dengue disease - biting a human. Photo: US Department of Agriculture via Wikimedia Commons.

Europe’s warming brings risk of dengue fever

Tim Radford

31st August 2014

As greenhouse gases raise temperatures in Europe, writes Tim Radford, British researchers warn that the risk is increasing of the arrival of dengue fever and other mosquito-borne killer tropical diseases. more...
Observed and simulated changes in Earth’s heating rate since 1985. Image: Allan et al., Author provided.

Heat accumulating in the deep oceans has put global warming on pause

Richard Allan

26th August 2014

Since 2000 global surface temperatures have risen less than expected, a fact seized on by climate change 'sceptics'. But indications are that the surplus heat has been building up all along, writes Richard Allan - in deep oceans where it does not influence observable climate. Not yet, anyway. more...
Wylfa nuclear power station on Anglesey, Wales. Photo: Joe Dunckley via Flickr.

Nuclear power is no answer to global warming

Ian Fairlie

10th July 2014

If we're serious about cutting CO2 emissions, there's no place for nuclear power, writes Ian Fairlie - because it's the least cost-effective way to do it. By far the best way is to improve energy efficiency. But tell the Government the truth, and it'll close you down. more...
Improving public transport is one of the key measures that could cut GHG emissions, increase 'gross world product' by $2.6 trillion and save a million lives. Photo: Mumbai bus by Patrik M. Loeff via Flickr.

World Bank: tackle global warming and add $2 trillion to global economy, save a million lives

Chris Rose

30th June 2014

Tackling global warming with better public transport, increased energy efficiency, renewable energy, clean cookstoves, better waste management could increase global GDP by $2.6 trillion. The alternative is growing risk from harshening climates ... more...
Beware wolves in sheep's clothing! Photo: public domain.

Beware environmental wolves in sheep's clothing!

William Laurance

9th June 2014

What do the Australian Environment Foundation, the Renewable Energy Foundation and the Global Warming Policy Foundation have in common? They are all fiercely anti-environment, writes William Laurance - and we must beware their 'eco-doublespeak'. more...

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