Tuesday, July 2, 2019

China Wrestles with the Toxic Aftermath of Rare Earth Mining

Yale Environment 360
A rare earth mine in Bayan Obo, China. Photo by NASA.
China has been a major source of rare earth metals used in high-tech products, from smartphones to wind turbines. As cleanup of these mining sites begins, experts argue that global companies that have benefited from access to these metals should help foot the bill. Story here.

Human contribution to record-breaking June 2019 heatwave in France


World Weather Attribution
The darkest red areas are where temperatures have surpassed 40°C.
Several European cities have experienced hottest conditions ever recorded.

Map by NASA. 
Every heatwave occurring in Europe today is made likely and more intense by human-induced climate change. Story here.

Monday, July 1, 2019

Global agriculture: Impending threats to biodiversity


SCIENCE NEWS
Wine crops in Chile. A dreamstime photo.

A new study finds that expanding cropland to meet growing food demands, 
poses a far greater threat to biodiverity in the tropics than intensification. More here.

Tuesday, June 25, 2019

Climate change puts health at risk and economists have the right prescription


PHYS ORG by Christopher Ragan And Courtney Howard, 
Wildfire smoke from Alberta descends on central
Manitoba, two provinces away. 2017. A PinP photo. 

Doctors and economists may seem like strange partners.  We spend our days working on very different problems in very different settings. But climate change has injected a common and urgent vocabulary into our work. We find ourselves agreeing both about the nature of the problem and the best solution. It is essential that we put a price on carbon pollution.  Story here.

Is relentless industrial development threatening the beautiful Birdtail River? Lucrative highway contracts have brought an explosion of noise and congestion to a picturesque valley in western Manitoba. (Letter)


Dear Editor,

If ever there was an example of just how numb we've become to the planetary crisis we all face, it’s surely playing out in plain sight right here, right now, in Shoal Lake. As many of my neighbours will already know, big dump trucks have been lumbering by in front of our homes for about a week now. Beginning before dawn, they sometimes become a steady stream that lasts much of each day, coming and going, until about dusk. 

These heavy diesel "twenty-two-wheelers" with long, steel boxes, have been moving gravel (or some similar material), from a big mine along the Yellowhead to the west, to a big maintenance project along Highway 21 to the south.
One of the many trucks working on the project
in question, ready to be loaded at the mine.
Since the trucks pass right by our front window, I’ve been able to do a rough count. At about 150 round trips per day, they must be set to move hundreds of thousands of cubic yards of material before the operation ends. Make no mistake, folks. This is one big job. 
The mine in full operational mode, fall, 2018. PinP photos.
The mine supplying the raw product has been expanding for years along the banks of the Birdtail River. I’ve been out there a few times over the past few years. I’ve captured shots of the copious dust it kicks up when in full operational mode (above). You can also hear the din of the machines echoing up and down an otherwise fairly peaceful valley. Prevailing westerlies carry the dust from the mine right over (and no doubt into) the river. Such sediment has long been proven to be bad news for fish and other aquatic life. 

This seems to matter not, however. Neither does the fact that internal combustion engines are significant contributors of greenhouse gases and climate change which the experts are warning will be in “runaway mode,” or beyond our ability to turn around, in about a decade. 

Apparently, we are also supposed to ignore the fact that being exposed to diesel fumes, even for a short time, can cause coughing and irritation of the eye, nose or throat. Long-term exposure can lead to even more serious health effects, including cancer. So just how long will this highway “improvement” project last? I have no idea, do you? 

And, by the way, did you take part in the vote that gave them our permission to do this? Oh, that’s right! There wasn’t one!

So how do we maintain our roads and standard of living to the degree to which we've become accustomed without producing these downsides?  I personally believe - while it's not something many will want to hear - maybe we cannot! Surely at least part of the solution must include actually lowering our expectations - travelling less and driving more energy-efficient vehicles. 

One thing I do know. The way we are doing things now, is taking us all down a dangerous, and very congested road.

Larry Powell
Shoal Lake, Manitoba.

Sunday, June 23, 2019

Canada's Permafrost Is Thawing 70 Years Earlier Than Expected, Study Shows. Scientists Are 'Quite Surprised'


TIME
Of course, "The Big Thaw" is not confined to Canada. This Alaskan
permafrost has melted, causing one of this lake's banks to collapse. 

As a result, its waters are draining into a river, then into the sea, 
perhaps leading to the lake's disappearance!
NPS Climate Change Response Photo (C.Ciancibelli)
The Canadian Arctic permafrost is thawing 70 years earlier than expected, a rate shocking a group of scientists who released the findings of their long-term study this month. More here.

Friday, June 21, 2019

Canada becomes first G7 country to ban shark fin imports

The Guardian

Shark fins for sale in Canada.
Photo by Hakai MAGAZINE 
  • Measure which also bans sale of fins awaits royal assent. Story here.