Stories written by Stephen Leahy
Stephen Leahy is the lead international science and environment correspondent at IPS, where he writes about climate change, energy, water, biodiversity, development and native peoples. Based in Uxbridge, Canada, near Toronto, Steve has covered environmental issues for nearly two decades for publications around the world. He is a professional member of the International Federation of Journalists, the Society of Environmental Journalists and the International League of Conservation Writers. He also pioneered Community Supported Environmental Journalism to ensure important environmental issues continue to be covered. | Web | Twitter |

Moi Enomenga, just before boarding a bus in Quito, Ecuador, the starting point for the caravan to Rio de Janeiro. Credit: Courtesy of Moi Enomenga

Indigenous Message to Rio+20: Leave Everything Beneath Mother Earth

Indigenous leaders from all over South America are making their way by foot, canoe and eventually on buses to be part of the Kari-Oca Caravan to Rio de Janeiro, to talk to world leaders at the United Nations Conference on Sustainable Development, Rio+20.

24 Policies to End the Earth Emergency

Ecologically ignorant policies are largely responsible for the interlinked crises that are unraveling the planet's life support system.

Andrew Wong with Inuit children at Cape Dorset, near the southern tip of Baffin Island. Credit: Courtesy of Andrew Wong

Activists Call for Creation of High Commissioner for Future Generations at Rio+20

The theme of the United Nations Conference on Sustainable Development (Rio+20) is "The Future We Want", but there is no official role for youth nor a spokesperson for future generations who will inherit that future.

Politics Heats Up Around Arctic Thaw

The best way to protect the Arctic is for all nations with an interest in the region to participate in its governance - including non-Arctic nations like China, Brazil, and Singapore - suggests a new report.

Andrew Wong with Inuit children at Cape Dorset, near the southern tip of Baffin Island. - Courtesy of Andrew Wong

Activists Call for Creation of a High Commissioner for Future Generations at Rio+20

A High Commissioner for Future Generations would act to balance the short-term nature of government electoral cycles by advocating for the interests and needs of coming generations.

For an Ailing Planet, the Cure Already Exists

The planet's climate recently reached a new milestone of 400 parts per million (ppm) of carbon dioxide in the Arctic.

Malaysia Applies Lessons Learned from U.S. Education System

The United States has simultaneously some of the highest quality and most troubled educational systems in the world. The dichotomy is inspiring countries like Malaysia to learn from examples in the United States in order to help them figure out how to turn the worst into the best.

Global Temperatures Rising on a Devastating Trajectory

Climate-heating carbon emissions set a record high in 2011, in a 3.2 percent increase over the previous year, the International Energy Agency reported this week. The main reason for this dangerous increase is that governments are failing to implement policies to prevent catastrophic increases of global temperatures.

A wind farm in Landkreis Paderborn, North Rhine-Westphalia. Germany is committed to double its energy and resource productivity by 2020. Credit: Ethan K/CC BY 2.0

Will Rio+20 Spark a Green Revolution?

Think of Rio+20 as the hothouse to grow the green ideas and values humanity needs to thrive in the 21st century.

Action Needed Now to Prepare for Severe Drought

Mexico and Central America look like they are covered in dried blood on maps projecting future soil moisture conditions.

Eroded soils in the municipality of San Cristóbal de las Casas, Chiapas, Mexico. - Mauricio Ramos/IPS

Action Needed Now to Prepare for Severe Drought Conditions in the Future

Numerous scientific studies predict severe and permanent drought conditions in large parts of Mexico, the United States and Central America.

Plastic Seas Altering Marine Ecology

Plastic trash is altering the very ecology of the world's oceans. Insects called "sea skaters", a relative of pond water striders, are now laying their eggs on the abundant fingernail-sized pieces of plastic floating in the middle of the North Pacific Ocean instead of relying on a passing seabird feather or bit of driftwood.

Struggles over Land Rights Fall Under the Rio+20 Radar

Land is the missing element at next month's big U.N. sustainable development summit known as Rio+20, where nations of the world will meet Jun. 20-22 with the goal of setting a new course to ensure the survival and flourishing of humanity.

Phytoplankton is a vital component in the ocean's food chain, and generates at least half of the oxygen we breathe. Credit: NOAA/public domain

Climate Change Threatens Crucial Marine Algae

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

Standing Up for the Planet and the Future

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.

New Projects Dispel Myths and Spread the Truth About Vaccines

In northern Pakistan, one in ten children dies before the age of five from diseases such as polio, measles or hepatitis, despite the availability of vaccines. And while health workers feared visiting this region, which includes the mountainous Swat district controlled by the Taliban until 2009, local people also fear the potentially life-saving vaccines.

Family in a flooded village on the banks of the Atrato River in Chocó, Colombia.  Credit: Jesús Abad Colorado/IPS

Extreme Weather is the New Normal

Extreme weather is fast becoming the new normal. Canada and much of the United States experienced summer temperatures during winter this year, confirming the findings of a new report on extreme weather.

Rio+20 Summit: A Moment That Must Be Seized

The upcoming Rio+20 conference has 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, many science and environmental experts believe.

Dwindling Resources Trigger Global Land Rush

A global scramble for land and mineral resources fuelled by billions of investment dollars is threatening the last remaining wilderness and critical ecosystems, destroying communities and contaminating huge volumes of fresh water, warned environmental groups in London Wednesday.

Rio+20 is not a major conference on biodiversity, but everything discussed there will relate to biodiversity, said Braulio Ferreira de Souza. Credit: Courtesy of CDB

Q&A: No Magic Solutions for the Extinction of Species

The Earth's life support system, which generates the planet's air, water and food, is powered by 8.7 million living species, according to the latest best estimate. We know little about 99 percent of those unique species, except that far too many are rapidly going extinct.

Dwindling Resources Trigger Global Land Rush

A global scramble for land and mineral resources fuelled by billions of investment dollars is threatening the last remaining wilderness and critical ecosystems, destroying communities and contaminating huge volumes of fresh water, warned environmental groups in London Wednesday.

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