Environment
UN report says nature is in worst shape in human history
Nature is in more trouble now than at any other time in human history, with extinction looming over 1 million species of plants and animals, scientists said Monday in the United Nations’ first comprehensive report on biodiversity.
It’s all because of humans, but it’s not too late to fix the problem, the report said.
Species loss is accelerating to a rate tens or hundreds of times faster than in the past, the report said. More than half a million species on land “have insufficient habitat for long-term survival” and are likely to go extinct, many within decades, unless their habitats are restored. The oceans are not any better off.
“Humanity unwittingly is attempting to throttle the living planet and humanity’s own future,” said George Mason University biologist Thomas Lovejoy, who has been called the godfather of biodiversity for his research. He was not part of the report.
“The biological diversity of this planet has been really hammered, and this is really our last chance to address all of that,” Lovejoy said.
Conservation scientists from around the world convened in Paris to issue the report, which exceeded 1,000 pages. The Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) included more than 450 researchers who used 15,000 scientific and government reports. The report’s summary had to be approved by representatives of all 109 nations.
Some nations hit harder by the losses, like small island countries, wanted more in the report. Others, such as the United States, were cautious in the language they sought, but they agreed “we’re in trouble,” said Rebecca Shaw, chief scientist for the World Wildlife Fund, who observed the final negotiations.
“This is the strongest call we’ve seen for reversing the trends on the loss of nature,” Shaw said.
The findings are not just about saving plants and animals, but about preserving a world that’s becoming harder for humans to live in, said Robert Watson, a former top NASA and British scientist who headed the report.
“We are indeed threatening the potential food security, water security, human health and social fabric” of humanity, Watson told The Associated Press. He said the poor in less developed countries bear the greatest burden.
The report’s 39-page summary highlighted five ways people are reducing biodiversity:
— Turning forests, grasslands and other areas into farms, cities and other developments. The habitat loss leaves plants and animals homeless. About three-quarters of Earth’s land, two-thirds of its oceans and 85% of crucial wetlands have been severely altered or lost, making it harder for species to survive, the report said.
— Overfishing the world’s oceans. A third of the world’s fish stocks are overfished.
— Permitting climate change from the burning of fossil fuels to make it too hot, wet or dry for some species to survive. Almost half of the world’s land mammals — not including bats — and nearly a quarter of the birds have already had their habitats hit hard by global warming.
— Polluting land and water. Every year, 300 to 400 million tons of heavy metals, solvents and toxic sludge are dumped into the world’s waters.
— Allowing invasive species to crowd out native plants and animals. The number of invasive alien species per country has risen 70% since 1970, with one species of bacteria threatening nearly 400 amphibian species.
Fighting climate change and saving species are equally important, the report said, and working on both environmental problems should go hand in hand. Both problems exacerbate each other because a warmer world means fewer species, and a less biodiverse world means fewer trees and plants to remove heat-trapping carbon dioxide from the air, Lovejoy said.
The world’s coral reefs are a perfect example of where climate change and species loss intersect. If the world warms another 0.9 degrees (0.5 degrees Celsius), which other reports say is likely, coral reefs will probably dwindle by 70% to 90%, the report said. At 1.8 degrees (1 degree Celsius), the report said, 99% of the world’s coral will be in trouble.
“Business as usual is a disaster,” Watson said.
At least 680 species with backbones have already gone extinct since 1600. The report said 559 domesticated breeds of mammals used for food have disappeared. More than 40% of the world’s amphibian species, more than one-third of the marine mammals and nearly one-third of sharks and fish are threatened with extinction.
The report relies heavily on research by the International Union for the Conservation of Nature, or IUCN, which is composed of biologists who maintain a list of threatened species.
The IUCN calculated in March that 27,159 species are threatened, endangered or extinct in the wild out of nearly 100,000 species biologists examined in depth. That includes 1,223 mammal species, 1,492 bird species and 2,341 fish species. Nearly half the threatened species are plants.
Scientists have only examined a small fraction of the estimated 8 million species on Earth.
The report comes up with 1 million species in trouble by extrapolating the IUCN’s 25% threatened rate to the rest of the world’s species and using a lower rate for the estimated 5.5 million species of insects, Watson said.
Outside scientists, such as Lovejoy and others, said that’s a reasonable assessment.
The report gives only a generic “within decades” time frame for species loss because it is dependent on many variables, including taking the problem seriously, which can reduce the severity of the projections, Watson said.
“We’re in the middle of the sixth great extinction crisis, but it’s happening in slow motion,” said Conservation International and University of California Santa Barbara ecologist Lee Hannah, who was not part of the report.
Five times in the past, Earth has undergone mass extinctions where much of life on Earth blinked out, like the one that killed the dinosaurs. Watson said the report was careful not to call what’s going on now as a sixth big die-off because current levels don’t come close to the 75% level in past mass extinctions.
The report goes beyond species. Of the 18 measured ways nature helps humans, the report said 14 are declining, with food and energy production noticeable exceptions. The report found downward trends in nature’s ability to provide clean air and water, good soil and other essentials.
Habitat loss is one of the biggest threats, and it’s happening worldwide, Watson said. The report projects 15.5 million miles (25 million
Many of the worst effects can be prevented by changing the way we grow food, produce energy, deal with climate change and dispose of waste, the report said. That involves concerted action by governments, companies and people.
Individuals can help with simple changes to the way they eat and use energy, said the co-chairman of the report, ecological scientist Josef Settele of the Helmholtz Center for Environmental Research in Germany. That doesn’t mean becoming a vegetarian or vegan, but balancing meat, vegetables and fruit, and walking and biking more, Watson said.
“We can actually feed all the coming billions of people without destroying another inch of nature,” Lovejoy said. Much of that can be done by eliminating food waste and being more efficient, he said.
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Follow Seth Borenstein on Twitter at www.twitter.com/borenbears .
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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content.
Seth Borenstein, The Associated Press
Agriculture
The Climate Argument Against Livestock Doesn’t Add Up
From the Frontier Centre for Public Policy
Livestock contribute far less to emissions than activists claim, and eliminating them would weaken nutrition, resilience and food security
The war on livestock pushed by Net Zero ideologues is not environmental science; it’s a dangerous, misguided campaign that threatens global food security.
The priests of Net Zero 2050 have declared war on the cow, the pig and the chicken. From glass towers in London, Brussels and Ottawa, they argue that cutting animal protein, shrinking herds and pushing people toward lentils and lab-grown alternatives will save the climate from a steer’s burp.
This is not science. It is an urban belief that billions of people can be pushed toward a diet promoted by some policymakers who have never worked a field or heard a rooster at dawn. Eliminating or sharply reducing livestock would destabilize food systems and increase global hunger. In Canada, livestock account for about three per cent of total greenhouse gas emissions, according to Environment and Climate Change Canada.
Activists speak as if livestock suddenly appeared in the last century, belching fossil carbon into the air. In reality, the relationship between humans and the animals we raise is older than agriculture. It is part of how our species developed.
Two million years ago, early humans ate meat and marrow, mastered fire and developed larger brains. The expensive-tissue hypothesis, a theory that explains how early humans traded gut size for brain growth, is not ideology; it is basic anthropology. Animal fat and protein helped build the human brain and the societies that followed.
Domestication deepened that relationship. When humans raised cattle, sheep, pigs and chickens, we created a long partnership that shaped both species. Wolves became dogs. Aurochs, the wild ancestors of modern cattle, became domesticated animals. Junglefowl became chickens that could lay eggs reliably. These animals lived with us because it increased their chances of survival.
In return, they received protection, veterinary care and steady food during drought and winter. More than 70,000 Canadian farms raise cattle, hogs, poultry or sheep, supporting hundreds of thousands of jobs across the supply chain.
Livestock also protected people from climate extremes. When crops failed, grasslands still produced forage, and herds converted that into food. During the Little Ice Age, millions in Europe starved because grain crops collapsed. Pastoral communities, which lived from herding livestock rather than crops, survived because their herds could still graze. Removing livestock would offer little climate benefit, yet it would eliminate one of humanity’s most reliable protections against environmental shocks.
Today, a Maasai child in Kenya or northern Tanzania drinking milk from a cow grazing on dry land has a steadier food source than a vegan in a Berlin apartment relying on global shipping. Modern genetics and nutrition have pushed this relationship further. For the first time, the poorest billion people have access to complete protein and key nutrients such as iron, zinc, B12 and retinol, a form of vitamin A, that plants cannot supply without industrial processing or fortification. Canada also imports significant volumes of soy-based and other plant-protein products, making many urban vegan diets more dependent on long-distance supply chains than people assume. The war on livestock is not a war on carbon; it is a war on the most successful anti-poverty tool ever created.
And what about the animals? Remove humans tomorrow and most commercial chickens would die of exposure, merino sheep would overheat under their own wool and dairy cattle would suffer from untreated mastitis (a bacterial infection of the udder). These species are fully domesticated. Without us, they would disappear.
Net Zero 2050 is a climate target adopted by federal and provincial governments, but debates continue over whether it requires reducing livestock herds or simply improving farm practices. Net Zero advocates look at a pasture and see methane. Farmers see land producing food from nothing more than sunlight, rain and grass.
So the question is not technical. It is about how we see ourselves. Does the Net Zero vision treat humans as part of the natural world, or as a threat that must be contained by forcing diets and erasing long-standing food systems? Eliminating livestock sends the message that human presence itself is an environmental problem, not a participant in a functioning ecosystem.
The cow is not the enemy of the planet. Pasture is not a problem to fix. It is a solution our ancestors discovered long before anyone used the word “sustainable.” We abandon it at our peril and at theirs.
Dr. Joseph Fournier is a senior fellow at the Frontier Centre for Public Policy. An accomplished scientist and former energy executive, he holds graduate training in chemical physics and has written more than 100 articles on energy, environment and climate science.
Environment
Canada’s river water quality strong overall although some localized issues persist
From the Fraser Institute
By Annika Segelhorst and Elmira Aliakbari
Canada’s rivers are vital to our environment and economy. Clean freshwater is essential to support recreation, agriculture and industry, an to sustain suitable habitat for wildlife. Conversely, degraded freshwater can make it harder to maintain safe drinking water and can harm aquatic life. So, how healthy are Canada’s rivers today?
To answer that question, Environment Canada uses an index of water quality to assess freshwater quality at monitoring stations across the country. In total, scores are available for 165 monitoring stations, jointly maintained by Environment Canada and provincial authorities, from 17 in Newfoundland and Labrador, to 8 in Saskatchewan and 20 in British Columbia.
This index works like a report card for rivers, converting water test results into scores from 0 to 100. Scientists sample river water three or more times per year at fixed locations, testing indicators such as oxygen levels, nutrients and chemical levels. These measurements are then compared against national and provincial guidelines that determine the ability of a waterway to support aquatic life.
Scores are calculated based on three factors: how many guidelines are exceeded, how often they are exceeded, and by how much they are exceeded. A score of 95-100 is “excellent,” 80-94 is “good,” 65-79 is “fair,” 45-64 is “marginal” and a score below 45 is “poor.” The most recent scores are based on data from 2021 to 2023.
Among 165 river monitoring sites across the country, the average score was 76.7. Sites along four major rivers earned a perfect score: the Northeast Magaree River (Nova Scotia), the Restigouche River (New Brunswick), the South Saskatchewan River (Saskatchewan) and the Bow River (Alberta). The Bayonne River, a tributary of the St. Lawrence River near Berthierville, Quebec, scored the lowest (33.0).
Overall, between 2021 and 2023, 83.0 per cent of monitoring sites across the country recorded fair to excellent water quality. This is a strong positive signal that most of Canada’s rivers are in generally healthy environmental condition.
A total of 13.3 per cent of stations were deemed to be marginal, that is, they received a score of 45-64 on the index. Only 3.6 per cent of monitoring sites fell into the poor category, meaning that severe degradation was limited to only a few sites (6 of 165).
Monitoring sites along waterways with relatively less development in the river’s headwaters and those with lower population density tended to earn higher scores than sites with developed land uses. However, among the 11 river monitoring sites that rated “excellent,” 8 were situated in areas facing a combination of pressures from nearby human activities that can influence water quality. This indicates the resilience of Canada’s river ecosystems, even in areas facing a combination of multiple stressors from urban runoff, agriculture, and industrial activities where waterways would otherwise be expected to be the most polluted.
Poor or marginal water quality was relatively more common in monitoring sites located along the St. Lawrence River and its major tributaries and near the Great Lakes compared to other regions. Among all sites in the marginal or poor category, 50 per cent were in this area. The Great Lakes-St. Lawrence region is one of the most population-dense and extensively developed parts of Canada, supporting a mix of urban, agricultural, and industrial land uses. These pressures can introduce harmful chemical contaminants and alter nutrient balances in waterways, impairing ecosystem health.
In general, monitoring sites categorized as marginal or poor tended to be located near intensive agriculture and industrial activities. However, it’s important to reiterate that only 28 stations representing 17.0 per cent of all monitoring stations were deemed to be marginal or poor.
Provincial results vary, as shown in the figure below. Water quality scores in Newfoundland and Labrador, Prince Edward Island, New Brunswick, Saskatchewan and Alberta were, on average, 80 points or higher during the period from 2021 to 2023, indicating that water quality rarely departed from natural or desirable levels.
Rivers sites in Nova Scotia, Ontario, Manitoba and B.C. each had average scores between 74 and 78 points, suggesting occasional departures from natural or desirable levels.
Finally, Quebec’s average river water quality score was 64.5 during the 2021 to 2023 period. This score indicates that water quality departed from ideal conditions more frequently in Quebec than in other provinces, especially compared to provinces like Alberta, Saskatchewan and P.E.I. where no sites rated below “fair.”
Overall, these results highlight Canada’s success in maintaining a generally high quality of water in our rivers. Most waterways are in good shape, though some regions—especially near the Great Lakes and along the St. Lawrence River Valley—continue to face pressures from the combined effects of population growth and intensive land use.
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