More bad news for Nalgene

Byoliveridley

Nalgene, and other so called safe hard plastics made from polycarbonates. Read here for background and all previous Bisphenol A postings.

PLoS Genetics – Bisphenol A Exposure In Utero Disrupts Early Oogenesis in the Mouse

In the course of studies to assess the effects of BPA on the mouse oocyte, we have uncovered a novel “grandmaternal” effect: exposure to BPA during pregnancy disturbs oocyte development in unborn female fetuses. When these fetuses reach adulthood, the perturbations are translated into an increase in chromosomally abnormal eggs and embryos. Thus, low-dose BPA exposure during pregnancy has multigenerational consequences; it increases the likelihood of chromosomally abnormal grandchildren. Our studies also provide mechanistic insight, and, surprisingly, suggest that BPA acts in the fetal ovary not by mimicking the actions of estrogen but by interfering with the function of one of the known estrogen receptors. Thus, our data suggest that estrogen plays a far earlier role in oocyte development than previously suspected and, importantly, raise the possibility that a variety of substances—both synthetic and naturally occurring—that mimic the actions of estrogen or act as estrogen antagonists may affect early oocyte development.

Once again, caution is involved in the interpretation of the results, mice are more sensitive than humans to environmental exposures. The heartening part of this, and other recent studies is that work is now being carried out at doses that are more representative of ambient exposures, making results much more relevant. The part in bold is equally interesting. Estrogen is a very powerful hormone that has so many unknown effects on the body (and the mind, presumably :-;)

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Tar Sands Don't Fit in the Clean Energy Economy

Byoliveridley

On February 19 President Obama will visit Canada. Prime Minister Stephen Harper has asked to discuss a North American agreement on global warming and energy, and it has been widely reported that under such a deal he will seek to shelter the tar sands in Alberta from the same greenhouse gas cuts that other polluters must make.

We can not be on be on the path to fight global warming and build a clean energy future by ignoring the facts. The tar sands are one of the most destructive projects on earth. They produce oil that has three times the carbon impact per barrel in the production process as regular oil while leaving a long term legacy of toxic tailings lakes and Boreal forest destruction.

There is a better way. Both the U.S. and Canada have tremendous economic potential in new energy industries and energy efficiency. The tar sands industry must do its fair share in reducing emissions as we make the transition to a new energy economy in North America.

Tell President Obama that he needs to stay on course to a clean energy future.

via Obama2Canada

This is a new cross-border effort by a whole host of Canadian and US environmental big guns including Greenpeace, Environment Defence, the Dogwood Initiative, etc. aimed at lobbying Obama on the Oil (Tar) sands of Alberta.

A few years ago, only 4% of all Americans knew that Canada was the their largest supplier of oil. So, any efforts aimed at educating Americans on where their oil comes from and the dirtiness of the process involved is welcome.

Once again, I will say that the future of the Oil Sands is not in Canadian hands, but in American hands. No Canadian government will turn off the tap, not now in this recession, not 3 years from now when we are on our next boom. It is going to take American pressure and the institution of a robust climate change mitigation program in the US. We shall see what happens in 2-3 years time.

I do not believe this campaign will make any difference whatsoever, Obama is in Canada for something like 3 hours, and presumably will have other things to talk about.

Obama: Warming must be tackled now – Climate Change- msnbc.com

Byoliveridley

He wasn’t expected to make an appearance, let alone a splash, but President-elect Barack Obama on Tuesday delivered a videotaped message to a climate change summit convened by California Gov. Arnold Schwarzenegger, vowing quick action to curb emissions and engage in international talks.

You can be sure that the United States will once again engage vigorously in these negotiations, and help lead the world toward a new era of global cooperation on climate change," he told hundreds of scientists, executives, governors and even foreign officials gathered in Los Angeles.

via Obama: Warming must be tackled now – Climate Change- msnbc.com

No longer the climate outcast, is the president of the United States, that proud designation among the so called developed country leaders would now be Steven Harper.

The glacier melts away in Ladakh

Byoliveridley

Ladakh

The enormity of climate change and its impact is on everyone’s lips in this cold desert where over 80 per cent of the farmers depend on the snow melt for their needs. Water is almost a luxury now. There is no authoritative study done so far to estimate the impact of receding glaciers in Ladakh, points out Ms Nisa Khatoon, project officer, of the World Wide Fund for Nature (WWF) in Leh. Scarcity of water has led to people digging bore wells in Leh, which is likely to have an impact on the underwater springs. Ms Khatoon also notes a reduction in pasture lands affecting the migration routes of the Changpas, a nomadic tribe that lives near the lakes in the upper reaches of Ladakh.

The Hindu : Opinion / Op-Ed : The glacier melt.

I seem to remember a certain Environment minister claiming that climate change mitigation policies were irresponsible because they would lead to a small drop in GDP growth in his country. If only the people of Ladakh had this luxury. Believers in reincarnation may wish that Mr Prentice be reborn as a farmer in Ladakh circa 2060, but there may not be any farmers in Ladakh come 2050, nor any glaciers, so I guess that would make him a lonely man!

Picture courtesy Rich Drogpa’s Flickr Photostream, used under a creative commons license

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Gaping Reminders of Aging and Crumbling Pipes – New York Times

Byoliveridley

Gaping Reminders of Aging and Crumbling Pipes – New York Times

Local and state officials across the country say thousands of miles of century-old underground water and sewer lines are springing leaks, eroding and — in extreme cases — causing the ground above them to collapse. Though there is no master tally of sinkholes, there is consensus among civil engineers and water experts that things are getting worse.

The Environmental Protection Agency has projected that unless cities invest more to repair and replace their water and sewer systems, nearly half of the water system pipes in the United States will be in poor, very poor or “life elapsed” status by 2020.

Yes, sewers are unsexy, there’s no new fancy science involved. But water and sewer systems are the very basis of public health, and the biggest reason why Americans don’t die of sleeping sickness and dengue fever (or their subtropical equivalents) in large numbers evey year. People who want to cut taxes and limit government need to keep this in mind. There’s no money to be made out of building and maintaining sewers, it’s a dirty job and government has to do it, or else nobody will, and money is required. We produce the waste, we need to be taxed appropriately for it. It’s that simple.

Coral Reefs do not recover from warming induced bleaching

Byoliveridley

BBC NEWS | Science/Nature | Warming set to ‘devastate’ coral

Bleaching in 1998 occurred in all reef regions of the world; 16% of the world’s reefs were lost in that one year, alone. But the western Indian Ocean suffered most because of an interaction between El Nino and another periodic climate phenomenon called the Indian Ocean dipole.

In the seven years since, the damaged reefs have been largely unable to reseed. Many simply collapsed into rubble and became covered in algae.

This collapse removed food and shelter from predators for a large and diverse amount of marine life. The survey showed four fish species could already be locally extinct, and six species are at critically low levels.

The survey also revealed that the diversity of fish species in the heavily impacted sites had plummeted by about 50%.

Well, this is bad news, there has been earlier indication that coral reefs were not necessarily doomed by higher ocean temperatures because this would just cause a shift in the coral species to varieties thriving at higher temperatures/exhibiting adaptive behaviors. Obviously, this did not happen fast enough to regenerate the reef.