PLANET IN PERIL

straight A protest sign in a window in Halifax. Photo by Tony Webster. MDs also call attention to fracking-associated links to pollution and global warming.   Story here. RELATED: Is the "Dubious Duo" of Fracking & Earthquakes More Common in Canada Than we Know? Planet In Peril Wonders...

 by Larry Powell The Green Wattle Creek bushfire moves  toward the Southern Highlands township of  Yanderra, Australia as police evacuate. Dec. 2019. Photo by Helitak 430. A new study finds,  manmade climate change did, indeed, worsen the bushfires which ravaged much of southeastern Australia late last year and early this year. An international team of seventeen scientists has just concluded, the probability of conditions developing like the ones which kindled the catastrophic blazes “has increased by at least 30% since 1900 as a result of anthropogenic climate change.”   And that figure could be much higher considering that extreme heat, one of the main factors behind this increase, is underestimated in the models used.  The heating of the planet, largely due to human extraction and burning of fossil fuels, has, for some time been shown to be the main factor behind the development of storms that are more intense and frequent than before. Looking to the future, t

natureresearch A Pexels photo. Half of the world's beaches, many of which are in densely populated areas, could disappear by the end of the century under current trends of climate change and sea level rise, suggests a paper published in  Nature Climate Change .  Sandy beaches occupy more than one third of the global coastline and have high socio-economic value. Beaches also provide natural coastal protection from marine storms and cyclones. However, erosion, rising sea levels and changing weather patterns threaten the shoreline, its infrastructure and populations. Michalis Vousdoukas and colleagues analysed a database of satellite images showing shoreline change from 1984 to 2015. The authors extrapolated historical trends to predict future shoreline dynamics under two different climate change scenarios. They determined the ambient shoreline change, driven by physical factors (geological or anthropogenic) and shoreline retreat due to sea level rise. They als

Extraction of Earth's oil, gas and coal reserves is probably unleashing  vastly more methane (CH4) into the air than is currently being estimated. Methane is a potent greenhouse gas and significant contributor to the dangerous heating of our planet.  by Larry Powell. Pump jacks extract crude oil from the Bakken field southeastern Saskatchewan, Canada. Are such operations releasing even more methane t han we once thought? A  PinP  photo. Using the largest ice drill in the world (below), the researchers “looked back in time” to the 17 hundreds, by drilling deep into the ice in Greenland and Antarctica.    The Blue Ice Drill, used to collect  the cores  used in this study.  Photo by B. Hmiel.                                                                        By analyzing air bubbles trapped, both in the ice cores and the snow , they were able to measure how much methane was escaping into the air at the time. Since this was the “pre-industrial era,” before major human expa

PHYS ORG High Alpine Tundra in Noatak National Preserve, Alaska.  U.S. Fish & Wildlife Service. In a warming world, Canada's north may become our breadbasket of the future - but this new "farming frontier" also poses environmental threats from increased carbon emissions to degraded water quality, according to the first-ever study involving University of Guelph researchers.   Story here.

Science Magazine Fire on Cape Barren Is. Australia, 2016. Photo by Planet Labs, Inc. Summary Australia is on fire like never before—and this year's "bushfire" season, which typically peaks in January or February, has barely begun. Driven in part by a severe drought, fires have burned 1.65 million hectares in the state of New South Wales, more than the state's total in the previous 3 years combined. Six people have died and more than 500 homes have been destroyed. As  Science  went to press, some 70 uncontrolled fires were burning in adjacent Queensland, and South Australia was bracing for potentially "catastrophic" burns. David Bowman, a fire geographer and director of the Fire Centre Research Hub at the University of Tasmania in Hobart, spoke with  Science  about the unprecedented crisis. The flames have charred even wet ecosystems once thought safe, he says. And the fires have become "white-hot politically," with Prime Minister Sco

Science News -  Wildlife Conservation Society A tropical forest in Guatemala. Photo by Chixoy. A new study says that carbon impacts from the loss of intact tropical forests has been grossly underreported. Story here.

PhysOrg Photo credit - IPCC. The Intergovernmental Panel on Climate Change presents a sobering analyses addressing the substantial contributions of agriculture to climate change and the ways the climate crisis is projected to jeopardize global food security if urgent action isn't taken. Story here.

The Guardian Ellesmere Island, northern Canada. Satellite photo by NASA. ‘Total surprise’ discovery overturns conventional understanding of rivers. Story here.

The New York Times The Trump administration took another legal shot at California on Wednesday, suing to block part of the state’s greenhouse gas reduction program and limit its ability to take international leadership in curbing planet warming emissions. Story here.

by Dan Soprovich. Conservative politicians lie about the carbon tax. Jason Kenny, Doug Ford, Andrew Scheer … you know who the rest are. And Conservative politicians have been lying about the carbon tax for more than a decade. When the Stephane Dion Liberals proposed a carbon tax in 2008, Prime Minister Stephen Harper lied about it. At the time, my dear departed Uncle Jack, who made millions of dollars from the oil industry, sent me an Internet article indicating that a poor retired couple in New Brunswick would be terribly impacted by the Liberal’s proposed carbon tax. However, that was simply not true. The proposed carbon tax included a rebate so that folks at the lower end of the economic spectrum would not be hurt (very similar to the carbon tax implemented by the Trudeau Liberal government). The Stephane Dion Liberals also provided an online calculator at the time. When I applied the circumstances of the retired couple within the calculator, the inconvenient truth was that the coup

NASA Courtesy Environment & Climate Change, Canada. Increasingly frequent and severe forest fires could burn generations-old carbon stored in the soils of boreal forests .  Releasing this previously buried carbon into the atmosphere could change these forests’ balance of carbon gain and loss, potentially accelerating warming. Story here.

ScienceDaily Do climate shifts influence tornados over North America? New research found that Pacific and Atlantic ocean temperatures in April can influence large-scale weather patterns as well as the frequency of tornadoes over the Great Plains region. Story here. US Dept. of Commerce.

Science Magazine. In 2017, western Canadian wildfires injected smoke into the stratosphere that was detectable by satellites for more than 8 months. The smoke plume rose from 12 to 23 kilometers within 2 months owing to solar heating of black carbon, extending the lifetime and latitudinal spread. Comparisons of model simulations to the rate of observed lofting indicate that 2% of the smoke mass was black carbon. The observed smoke lifetime in the stratosphere was 40% shorter than calculated with a standard model that does not consider photochemical loss of organic carbon. Photochemistry is represented by using an empirical ozone-organics reaction probability that matches the observed smoke decay. The observed rapid plume rise, latitudinal spread, and photochemical reactions provide new insights into potential global climate impacts from nuclear war.   More here. Smoke-filled skies over San Diego - fall 2007. Photo by Eric Pettigrew.

CBC News Climate change, resource extraction, agriculture among causes of potential water shortage, says author.  Story here. Echo Lake, SK. Photo by Joe Mabel from Seattle.

Science News A fertilizer plant in Brandon, Manitoba, Can. A PinP photo. Current and planned energy infrastructure could emit around 850 gigatons of the greenhouse gas.  Story here.

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.

Science News A  forest in Maritime Canada. A PinP photo. With age, forests in eastern US and Canada become less vulnerable to climate change, study finds.  Story here .

PHYS ORG Flooding in Saskatchewan. A PinP photo. The frequency of downpours of heavy rain—which can lead to flash floods, devastation, and outbreaks of waterborne disease—has increased across the globe in the past 50 years, research led by the University of Saskatchewan (USask) has found. Story here.