Every day people make decisions about what to eat, sometimes opting for colorful fruits and veggies, sometimes finding the smell of bacon irresistible. At the end of the day people are controlling their own health. What is remarkable though, is the possibility that something one swallows today could have a lasting effect on future offspring – children, grandchildren, great grandchildren. New research is finding a generational impact of certain chemicals. This time it’s not the bacon we’re worried about – but plastics and the toxins within them.
Twenty years ago, researchers at Washington State University discovered accidentally that the now-infamous bisphenol A (BPA) was leaching out of plastic cages, harming the mice within. The contamination caused abnormalities in mice eggs and fertility. Numerous subsequent studies found BPA exposure affects adult fertility and health across species, including monkeys, fish, and humans. Known to decrease sperm count in rats and to cause breast cancer in women, BPA was banned in 2012 by the FDA from being used in baby bottles and sippy cups. Yet BPA is still used in many products, including epoxy resins used to coat canned foods. A 2004 study of 2,517 people found that 93% had detectable quantities of BPA’s by-product in their urine.
Since the toxic effects of BPA came to light, several replacement bisphenols were quickly brought to market by chemical companies and are now in widespread use. Twenty years after the BPA toxicity discovery, by remarkable chance, the same Washington State University lab recently noticed again that something was amiss with their mice. This time the mice were housed in cages comprised of replacement bisphenols, largely believed to be safer than BPA. The researchers subsequently performed controlled studies with several of the replacement bisphenols including BPS, a widely used replacement.
Results demonstrated that the new bisphenols behaved similarly to BPA, causing health problems including detrimental effects on fertility in both males and females, reported in Cell Biology in September 2018. Scientist Sarah Hunt explained, “This paper reports a strange déjà vu experience in our laboratory.” What the lab discovered once with BPA, it was seeing again with the replacements. Perhaps most troubling were the long-lasting effects of the toxins. Even if all bisphenols could be magically eliminated today, the toxic effects would still last about three generations through the germline of people already exposed. This means bisphenols ingested today could affect the fertility of one’s great grandchildren.
The bisphenol case demonstrates that FDA bans do not necessarily solve the root problem. Chemical companies tend to roll out similar chemicals to those that have been banned, because this is the easiest way to bring something to market quickly. But more testing is needed before chemicals are released into the environment. Long term problems such as generational infertility and cancer risk often cannot easily be examined in clinical trials, and environmental effects are not rigorously analyzed prior to release.
The Washington State University study also proved that damaged and heated plastics are particularly deadly, as the damaged cages leached more toxins. This should serve as a warning for those who microwave food in plastic containers for their families. And it should remind us that discarded plastic bottles degrading in oceans and rivers are releasing toxins that cause irreversible infertility.
The current estimate of plastics in our oceans is approximately 150 million metric tons. By 2050, the amount is expected to ‘outweigh the fish,’ according to Jim Leape, co-director of the Stanford Center for Ocean Solutions. A recent study has determined microplastics (small plastic particles) are present in every river and lake in Britain. And they have been found in tap water, everywhere from the Environmental Protection Agency in Washington, DC to the Trump Grill in New York. A study of 159 drinking water samples on five continents found that 83% of those samples were contaminated. Plastics are everywhere, from the highest mountains to the deepest parts of the ocean and Arctic. Nanoplastics less than 50 nanometers long have even been found in plankton, which is ingested by fish that humans eat.
Scientists are finding that plastics are disrupting marine mammals’ ability to reproduce. Many forms of plastic including polychlorinated biphenyls (PCBs) and Bisphenol A are endocrine disruptors, meaning they affect the hormonal systems of animals. An orca of adult age called Lulu, researchers recently found, was barren as if she was a juvenile. Analysis revealed very high levels of PCBs in her lipid tissues. One orca pod off the coast of Scotland has not produced a calf in 25 years. Despite bans on PCBs 30 years ago, toxins remain in orca mothers’ milk, and are passed from mother to baby. A recent study published in the journal Science predicts that half the world’s population of orcas will be extinct in just a few decades due to PCB poisoning. Researchers have also found that despite the PCB ban in Europe, levels of PCBs have not decreased, indicated that they may be leaching out of landfills. Hormone disruptors have also been found to impair male frogs’ fertility, and to cause tadpoles to more frequently develop ovaries rather than testicles, thus skewing the proportion of males to females. Similar problems have been found in fish. Reproductive risks associated with endocrine disrupting chemicals span species.
Bisphenol A is known to decrease sperm count and to cause cancer in many species. Its counterpart replacement plastics (BPS, BPF, BPAF, BPZ, BPP, BHPF… to name just a few), researchers have recently discovered, are no better. Whether these pollutants have already affected humans is anyone’s guess, but it would be wise to view statistics during the time period since plastics became popular, starting in the 1960s, and to see if there is a significant trend over time.
It appears there is. Notably, a 2017 study found that sperm counts per milliliter declined by more than 50% from 1973 to 2011, with total sperm counts down almost 60%. Two other recent studies have demonstrated that over the past few decades in the U.S. and Europe, both sperm count and motility have decreased.
The United Nations Environment Assembly (UNEA) recently debated a proposed legally binding treaty to address plastic pollution. One objective of the proposed treaty was to phase out single use plastics by 2025. Norway also suggested a global agreement for handling ocean plastic pollution. Sadly, the U.S. was the largest voice against the proposed treaty and the proposed global waste disposal plan.
Eventually a non-legally-binding agreement was reached in which the U.S. watered down the language to “significantly reduce” plastics by 2030, eleven years from now. One UN delegate described the Trump representatives as “trying to remove all targets and timelines.”
Meanwhile, the U.S. has been exporting large quantities of plastics overseas for years, historically mostly to China. In the previous year, 70% was exported to China and Hong Kong. But in 2018, China banned imports of plastic waste. Since the ban the U.S. has looked to poorer nations for its overseas garbage dump. Unearthed, Greenpeace’s research group, has found that in the first six months of 2018, almost half of U.S. plastic waste was sent to developing countries: Thailand, Malaysia, and Vietnam. U.S. plastic waste exports to Thailand went up by nearly 2,000% this year.
Most developing nations do not have sufficient recycling infrastructure to properly handle plastic waste. On Earth Day 2018, the top producers of mismanaged ocean plastic waste were ranked by tons of waste. The top five after China were Indonesia, the Philippines, Vietnam, Sri Lanka, and Thailand. In some cases as in parts of the Philippines, recycling is done laboriously by hand, picking bottles out of large dumps. As this is very difficult and time consuming, large quantities find their way into oceans and rivers. Sadly and not surprisingly, the Pasig River in the Philippines transports approximately 72,000 tons of plastic downstream, and has been declared “biologically dead” since 1990. Instead of helping these countries to develop recycling infrastructure, we are sending them more toxic waste.
We might think we are kicking the can down the road by sending plastics overseas but they will wash right back up on the Hawaiian and California coast. Beachgoers might witness solid litter washing ashore, or unearthed from the stomachs of dead whales. Or they might not notice the pollution — instead unknowingly consuming microplastics in their next Ahi Tuna sandwich. On the East Coast, one might encounter them in a glass of water at the Trump Grill in New York. There is only one world sink after all. Tossing poison to the other end of the tub only works for so long – it will inevitably, over time, mix and wash back to your side of the water. And when one of us is diagnosed with cancer, do we really know the cause?
It is instructive to remember the orca Lulu, a mammal like us, who no longer produces eggs. And to remember that if sperm counts continue to decline at the present rate, they will soon reach levels where it becomes difficult to have children. By then, the world’s water supply may be irreversibly contaminated and an enforceable treaty will be too late.
Postponing a legally binding treaty may put us on the path of our fellow mammals the orcas, half of which already face inevitable extinction worldwide. And we can not forget the tragedy of the orca Tahlequah, who last summer carried her dead calf for a record 17 days and 1,000 miles in mourning.
Eleven years may be too late.
Author’s note: this piece first appeared in CommonDreams.org
Researchers unveil roadmap for a carbon neutral China by 2060
Chinese president Xi Jinping told the UN general assembly on 22 September that China would achieve carbon neutrality by 2060. The announcement sparked a huge response and gave rise to speculation as to how this would be achieved.
On 12 October, research into a possible route to that target was published by Tsinghua University’s Institute for Climate Change and Sustainable Development (ICCSD) – the most authoritative roadmap to emerge since the commitment was made. If China follows the recommendations of the report, it could mean tougher energy-saving and emissions-reductions targets for the 14th Five Year Plan (FYP), a more ambitious Nationally Determined Contribution (NDC) for 2030, with yet faster and deeper decarbonisation to come from 2030 onwards.
Decarbonising for the 1.5C target
The 2015 Paris Agreement aims to limit climate warming to 2C (compared to pre-industrial levels) at the end of the century, while pursing efforts to limit the increase to 1.5C. That 1.5C target has been controversial because it requires greater emissions cuts and it was only added to the text of the agreement at the last minute.
Professor He Jiankun, project leader of the new study and chair of the ICCSD’s academic committee, said at a press briefing on the research that “achieving carbon neutrality by 2060 essentially means a long-term deep decarbonisation process oriented at the 1.5C target”. The director of the ICCSD is Xie Zhenhua, formerly China’s special climate envoy. Xie was also overall supervisor of this research project.
According to the roadmap presented in the study, by 2050 China must achieve net zero carbon dioxide emissions, with emissions of all greenhouse gases down 90% on 2020 levels, if it is to achieve carbon neutrality by 2060. The authors did not offer a specific roadmap for reducing emissions between 2050 and 2060, but said that emissions cuts should be increased, with negative emissions growth in the energy sector and more capture and sequestration of carbon dioxide using carbon sinks and carbon removal technologies.
The roadmap implies that all greenhouse gases are included in China’s 2060 pledge – something that observers had wondered about. But one expert close to China’s policy on non-CO2 greenhouse gases told China Dialogue that for now it remains an academic assumption, and official documents would be needed to confirm the government position.
Although the recommended roadmap is ultimately closing in on the 1.5C target, this does not mean China will immediately fast-track deep decarbonisation. The roadmap has two stages: before 2030 China will cut emissions according to an “enhanced mitigation scenario”, with a tougher 2030 NDC target and increasing efforts to reduce emissions. But that alone would leave China far from even the 2C target. However, the researchers propose much tougher measures after 2030, which will bring China into line with the 1.5C target. Assuming these recommendations are adopted, China will see a later, but steeper decline in emissions than it would if it set out to hit the 1.5C target immediately, with a carbon peak by 2030, an energy consumption peak around 2035, and carbon emissions approaching zero by 2050.
At the launch, He Jiankun explained that “the economy and the energy sector are hugely complicated systems, with a lot of inertia, so a transition will take time”. Rapid implementation of the absolute carbon cuts needed for the 2C or even 1.5C target would be very difficult, and China still needs to develop. So in the first stage, staving off additional emissions rather than cutting existing emissions should be the priority to bring about a carbon peak. But after 2030, the speed with which China reduces emissions will “far outstrip the developed nations”.
Implications for near-term policy
There is a great deal of interest in how China’s 2060 carbon neutrality target will affect the 14th Five Year Plan (for 2021-2025), which is currently being drafted, with this being seen as a test of China’s level of commitment.
The researchers also make suggestions for energy-saving and emissions-reduction targets in the 14th FYP, such as a 20% share of non-fossil fuels in primary energy consumption by 2025, and a carbon emissions cap of under 10.5 billion tonnes (2020 figures for these are expected to be 16% and 10.3 billion tonnes respectively).
“We have to control any rebound in coal use during the 14th FYP and work towards peak coal, or even negative growth,” said He.
The researchers also recommend China toughens and updates its NDC for 2030, lowering carbon dioxide emissions per unit of GDP by over 65% on 2005 levels and reaching a 25% share of non-fossil fuels in primary energy consumption.
Speaking at the launch, Wang Yi, a member of the Standing Committee of the National People’s Congress (China’s top legislative body) and vice director of the Chinese Academy of Sciences’ Institute of Science and Development, said that 14th FYP targets should remain tough and be expanded: for example, by including overall caps – in particular a carbon cap – alongside existing efficiency targets (such as carbon and energy intensity). Other experts have also called for a carbon cap in the 14th FYP.
Wang also pointed out that a package of legislation will be needed to ensure 14th FYP climate targets are met. This includes an Energy Law currently being drafted, an ongoing revision to the Energy-Saving Law, and a Law on Combating Climate Change being prepared. “The Law on Combating Climate Change will only reach the statute books if a carbon cap is at its core – if not, it loses a raison d’etre as other laws can replace it,” Wang said. Lower level regulations, such as for carbon markets, must also keep up, he said.
From our partner Chinadialogue
COVID-19 has given a fillip to biodiversity
The COVID-19 outbreak caused many problems for the world, but in return gave the planet’s environment and biodiversity a chance to breathe. The high mortality rate may be worrisome, but it provided us with the opportunity to think more about how we should treat biodiversity in a better way.
Biodiversity is an important feature of life explained by the vast diversity of plants and animals, which is a non-renewable resource and its loss will be irreparable, Kioumars Kalantari, head of the natural environment and biodiversity of the Department of Environment said.
The growing importance of biodiversity is due to its role in maintaining the stability of ecosystems, because in an ecosystem, the greater the species diversity, the longer food chains, resulting in a more stable environment, he added.
According to him, today the protection of biodiversity, habitats, and natural ecosystems is among the most important indicators of sustainable development in the world.
Fortunately, Iran benefits from rich biodiversity due to special climatic, geographical, and topographic conditions and characteristics, and more than 8600 species of plants and 1300 species of vertebrates live in the country, he highlighted.
Unfortunately, the environment faces a variety of threats and challenges, including pollution, habitat destruction, climate change, sand and dust storms, natural disasters such as droughts, floods, and increasing disease outbreaks, he noted.
He went on to say that despite all the efforts that have been made nationally as well as internationally worldwide, the environment today is no better than it was in the early twentieth century.
The sudden prevalence of COVID-19, followed by lock-downs and restrictions around the world, reduction in human activity, the evacuation of highways, reduction in travel, air, and land transport, and a significant drop in greenhouse gas emissions, has benefited the nature much, he explained.
It greatly improved air quality and reduced the risk of lung and cardiovascular diseases, key environmental indicators that have been steadily deteriorating for more than half a century, remained fixed, or moved towards improvement, he emphasized.
The extent of the disease and the human casualties may be so painful that it does not give us a chance to rejoice in the healing process of nature and the environment, but the good condition of climate and nature can be a fillip for each of us on this planet, especially those in charge, to think more about our past actions and slow down our exponential pace of unsustainable development and the destruction of valuable biological resources, he also highlighted.
Perhaps changing our plans and behaviors to use more of renewable energy, while increasing the use of telecommunications facilities such as video conferencing, webinars, online meetings, can greatly reduce travel as well as greenhouse gas emissions and thus help preserve nature and valuable biodiversity treasures, he said.
Biodiversity conservation is in fact the protection of ourselves and the resources without which we cannot survive, he stated, adding, human health depends on the health of other creatures and the environment in which they live.
The outbreak of the coronavirus and its pathogenic consequences highlights the importance of the dependence of the health of all organisms on the planet on each other and the environment.
“Our Solutions Are in Nature” which expresses the importance of nature in responding to the challenges we face in terms of sustainable development and the necessity of comprehensive cooperation to achieve a future in harmony with nature, he added.
According to experts, “the most important and largest public asset of any country is the environment”, unfortunately, due to the wrong approach and underestimation of its vital importance, its capacity is declining every day, and it cannot be exchanged or bought, although some officials, especially economists, suggest ways to price these environmental resources, they are invaluable, he stated.
Kalantari further expressed hope that by living in harmony with nature, humans will be able to benefit as much as possible from the valuable resources and to protect and preserve the biological richness of the world in the best possible way.
Why human absence prospers nature?
Pointing out that protecting the planet is important to humans, and we need to maintain the best conditions on Earth after Coronavirus, Mohammad Darvish, a member of the National Security Council for the environment, said that the pandemic has caused the earth to breathe deeply, and now the wise man is faced with the question that “why, when human activity as a member of the ecosystem decreases, not only does nothing happen, but the condition of nature improves.”
Think of bees being removed from nature. In this case, the integrity of the Earth’s environmental property, the reproduction of many species and humans themselves will be damaged, or if brown bears are removed, soil fertility will decrease, or if wild boars are removed, water permeability will decrease and floods will increase, he explained.
Therefore, there have been wise in the creation of all plant and animal species or even insects, and have contributed to the earth’s resilience, he emphasized.
Why has it now happened that man, who considers himself the best of creatures, that must be more responsible, has behaved in such a way that his absence is in favor of nature and the earth?
Such happening should give us a lesson to change our development programs in favor of nature and try to understand the laws of nature, instead of spending budgets on warfare, larger and more horrific weapons, he noted, implying that environmental research and health is now more essential as well as improvement of the education system so that in the post-corona crisis world we can appear wiser, more knowledgeable, and more responsible.
From our partner Tehran Times
Global Warming: Past as Prologue to the Future
Dr. Arshad M. Khan and Meena Miriam Yust
If the vice-presidential debate lacked direction, hurricane Delta did not. It slammed into the Louisiana coast as a Category 2 causing widespread damage with its 100 mph winds, then continued inland as a Category 1 storm. If Delta sounds like an unusual name for a hurricane, it is.
The World Meteorological Organization has a list from A to W of 21 potential storm names. The letters Q, W, X, Y and Z are omitted. In all there are six lists meaning that the 2020 list will be repeated in 2026.
Using names for storms facilitates identification in communications when compared to the prior method using latitude and longitude particularly when the storm itself is moving.
So here we are in 2020 with 25 storms so far. The residents on the Louisiana coast have had a double whammy with hurricane Laura slamming them earlier in the last week of August. It was a deadly Category 4 with maximum sustained winds of 150 mph. Just 7 mph short of a Category 5 (the deadliest) Laura was only the fourth Category 4 to strike Louisiana since records were kept.
In addition to the numbers of storms, there are other climate anomalies. September this year has been the hottest on record and Death Valley reached a temperature of 130 F (54.4 C) the highest ever observed. September 2019 in turn had also been the hottest on record for our planet.
If there are storms along the coasts and flooding due to a warming ocean, inland it is not only warmer but drier. Forests are like tinder needing only a lightning spark or a downed electricity line to set them off. Thus the forest fires in southeastern Australia and California.
Europe too is warmer. Forest fires particularly in the south, and inundation are more frequent. Reading in England for example has just suffered the wettest 48 hours ever.
The south of France usually associated with blissful weather experienced torrential downpours with more than a half meter of rain (about 20 inches) in a day. It was an event Meteo-France noted that occurs once in a hundred years. And then it happened again. Storm Alex, the cause of this misery, hit France and also Italy and England. Floods and landslides caused serious damage north of Nice destroying roads, bridges and houses. In adjoining Italy a section of a bridge over the Sesia river collapsed in the rising waters. Affecting the Piedmont, Lombardy and Liguria regions, it dropped over 23 inches (0.63 m) of rain. The Po river rose more than 9 ft (3 m ) in 24 hours.
The key lesson from all this is that global warming is making rare events more common, that the window for action is narrowing, and that the longer such action is delayed the more onerous will be the burden on humanity. In the meantime, the global warming already built into the system will continue to affect climate for the foreseeable future.
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