Rapidly rising temperatures, changes in precipitation, and increased lightning strikes are leading to ever-larger wildfires in the northern forests of Alaska, Canada, and Siberia, with potentially severe ecological consequences.
On ancestral lands, the Fond du Lac band in Minnesota is planting wild rice and restoring wetlands damaged by dams, industry, and logging. Their efforts are part of a growing trend by Native Americans to bring back traditional food sources and heal scarred landscapes.
An E360 Video Contest Award Winner
The second runner-up in the Yale Environment 360 Video Contest tells the story of the residents of a forest village in central Mozambique who have helped create a tourist destination centered on an elephant population that once wreaked havoc in their community. Watch the video
| Watch other winning videos
The concept of the "solar suburb" includes a solar panel on every roof, an electric vehicle in every garage, ultra-efficient home batteries to store excess energy, and the easy transfer of electricity among house, car, and grid. But will the technological pieces fall in place to make this dream a reality?
At the upcoming U.N. climate conference, most of the world’s major nations will pledge to make significant reductions in greenhouse gas emissions. But serious doubts remain as to whether these promised cuts will be nearly enough to avoid the most severe impacts of climate change.
More than half a century after scientist Rachel Carson warned of the dangers of overusing the pesticide DDT, conservative groups continue to vilify her and blame her for a resurgence of malaria. But DDT is still used in many countries where malaria now rages.
An astonishing 18 percent of the European Union’s land area is protected under a network of preserves known as Natura 2000. Now, at the urging of business interests and farmers, the EU is examining whether regulations on development in these areas should be loosened.
Weaning the U.S. economy off fossil fuels will involve the wide deployment of utility-scale solar power. But for that to happen, the environmental community must resolve its conflict between clean energy advocates and those who regard solar farms as blights on the landscape.
In the last two decades, officials in Colorado have watched as massive, months-long wildfires have become a regular occurrence in their state. A Yale Environment 360 video goes onto the front lines with Colorado firefighters who describe what it’s like to continuously confront deadly blazes fueled by a hotter, drier climate.
Many hydroelectric dams produce modest amounts of power yet do enormous damage to rivers and fish populations. Why not take down these aging structures, build solar farms in the drained reservoirs, and restore the natural ecology of the rivers?
Interview: A Scientist’s View
On How to Repair the Planet
For an environmental scientist who studies how humanity is pushing the earth close to potentially disastrous tipping points, Johan Rockström
of a new book, Big World, Small Planet
— is surprisingly optimistic. Although he reckons that our species has crossed four of nine “planetary boundaries,” including those on climate change and deforestation, he believes there is still time to pull back from the brink and create a sustainable future based on renewable energy and a “circular” economy that continually reuses resources. In an interview with Yale Environment 360
, Rockström describes how an alignment of science, technological advances, and a growing public hunger for action can get civilization back on track. “It’s not a journey where we are backing into the caves,” says Rockström. “It’s a journey of high technology ... and huge, multiple benefits.”
Read the interview.
Climate models are underestimating the effects of so-called brown carbon from sources such as forest fires because the models
do not account for regional factors — such as areas where wood-burning stoves are common — when estimating brown carbon's climate-warming impacts. Black carbon, primarily from urban combustion sources like vehicles and factories, absorbs the most sunlight, the researchers explain, and it's well-accounted for in climate models. However, most models don't properly account for brown carbon, the researchers say. Brown carbon "can be a significant absorber of sunlight, making it as bad for climate warming as black carbon," said co-author Manvendra Dubey of Los Alamos National Laboratory. The study, published this week in Nature Communications
, stresses the differing effects of black and brown carbon on the climate: Solid wood combustion, a source of brown carbon soot, is pervasive during United Kingdom winters, but very uncommon in other study locations, such as Los Angeles, which generally sees more black carbon soot from vehicles.
A slew of grid-patterned fish farms line the coast of Liaoning Province in northeast China, as shown in this photograph
Aquaculture in China's Liaoning Province
an astronaut aboard the International Space Station. The aquaculture operations have been built out from the highly agricultural coast to a distance of roughly 4 miles. Liaoning Province ranks sixth in China in terms of aquaculture production, and this group of fish farms, which face the Yellow Sea, is the largest set constructed along the province's coastline. The fish farm basins are built on shallow seabeds, mudflats, and bays. Outer barriers protect the basins from winter storms and large waves generated by passing ships. Most aquaculture products are purchased live in China, with less than 5 percent being killed and processed for selling in local or foreign markets, the U.N. Food and Agriculture Organization (FAO), says. Shellfish, a traditional marine food source, still dominates China's marine production, according to the FAO's Fisheries and Aquaculture Department, accounting for 77 percent of the market.
In Booming Aquaculture Industry,
A Move to Plant-Based Food for Fish
As the aquaculture industry continues to rapidly expand, with production more than doubling in the past 15 years, fishing pressure
A worker feeds trout.
has grown on the anchovies, sardines, and other species used to make feeds for farmed fish. Now, however, researchers are rapidly developing nutritious plant-based food that can put the aquaculture sector on a more sustainable path. Using protein-rich legumes such as soybeans and combining them with various oil-rich supplements, scientists say they are steadily moving toward all-vegetarian diets for aquaculture fish. “I was told by many [people] that fish require fishmeal because that’s what they eat in the natural world,” says one leading researcher. “But that’s just wrong.”
In advance of the Paris climate talks, European and African countries announced
an initiative to stem the rising tide of forest destruction in Central Africa, one of the world’s last large expanses of rainforest. Norway is the first country to pledge funds to the Central African Forest Initiative (CAFI) — up to $47 million dollars per year through 2020 — to support the program. The agreement calls for the six participating Central African countries — Cameroon, the Central African Republic, the Democratic Republic of Congo, Equatorial Guinea, Gabon, and the Republic of Congo — to devise national investment plans that will tackle complex factors leading to deforestation, and it prioritizes long-term solutions over short-term, one-time actions. Central Africa is home to the world's second-largest tropical forest, but the region is increasingly under threat, mostly from small-scale slash-and-burn agriculture. Its preservation is key to global efforts to slow climate change, scientists say.
Shell Oil has announced
that it will stop its controversial exploratory drilling for oil and gas in Arctic waters for the foreseeable
Shell's Polar Pioneer rig as it left Seattle for the Arctic
future, saying in a statement that the reserves it had discovered were not “sufficient to warrant further exploration.” Shell began operating its first exploration well on July 30, 2015, in the Chukchi Sea off the northwestern coast of Alaska. But the company reported that although it had found indications of the presence of oil and gas, the reserves in the basin where they were drilling were, in the words of one company official, "clearly disappointing." Under Shell's federally approved exploration plan, all rigs and support vessels must leave the Chukchi Sea before the end of October. Environmental groups hailed Shell's announcement.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s unspoiled coral reefs. View the gallery.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.