Earth

Cicadas and Lifespans - Reflections on a Morning Walk

Len Rosen's picture

August 23, 2015 - I'm listening to cicadas outside my apartment window this morning. The steady high-pitched buzz saw singing that often is mistaken by those who are uninformed for the sound of electricity passing through wires. On my morning walks these past few weeks with Maya, my red miniature poodle, it has been hard not to notice cicadas.

Carbon Capture from the Air Technology Demonstrated

Len Rosen's picture

August 21, 2015 - If we could directly harvest carbon dioxide (CO2) from the air and separate and capture the carbon while converting what's left to oxygen then that would really be a technology breakthrough of consequence in our fight against global warming. Sounds like science fiction? Well it's not.

Zero-Carbon Initiative Helps Home Owners Judge Solar Potential of Their Roofs

Len Rosen's picture

August 19, 2015 - I am often asked by readers if it is worth putting solar panels on the roof of their homes. Here in Toronto solar powered houses are few and far between. But just because Toronto is in a northern country doesn't mean solar power is not a good alternative to grid-delivered electricity.

Maladaptation Related to Climate Change a Growing Concern

Len Rosen's picture

August 16, 2015 - When my wife and I were in Florida last winter we drove along A1A, the roadway next to the Atlantic Ocean, where the City of Fort Lauderdale was in the process of spending $11.8 million to mitigate against future hurricanes and "storms of the century"

New UN Projections Show World Population to Hit 11.2 Billion by 2100

Subject(s):
Len Rosen's picture

August 14, 2015 - If you live in Canada it sometimes is hard to believe that our world will see an almost doubling of population between the beginning and end of the 21st century. That's because the population growth being experienced globally is not reflected locally in this country.

Climate talks need to address ocean warming and acidity threat.

Len Rosen's picture

August 13, 2015 - Whatever we are doing to the atmosphere by adding greenhouse gases will take centuries to repair. But the damage to the ocean makes these atmospheric perturbations look like a sideshow.

Mangroves, Global Warming and Rising Sea Levels

Len Rosen's picture

August 10, 2015 - Developers of new beach resorts in tropical locations are very familiar with mangroves and they hate them because they take up valuable beachfront real estate. But hating mangroves makes little sense in a world facing many environmental challenges because these trees perform an amazing series of functions.

Why the Number One Trillion is Too Much

Len Rosen's picture

August 7, 2015 - One trillion is a big number. And when it comes to carbon dioxide emissions it represents what scientists believe is the absolute limit of that gas in our atmosphere. One trillion translates to a peak of 450 parts per million (ppm).

What Exactly is the Clean Power Plan That President Obama Announced?

Len Rosen's picture

August 4, 2015 - Yesterday the President of the United States released the revised Clean Power Plan with a focus on fossil-fuel burning power plants. Why that focus? Because these power plants are the largest carbon dioxide (CO2) emitters in the U.S. contributing 31% of total greenhouse gas (GHG) emissions.

Watch for it - the U.S. is About to Move the Goal Posts in Combating Climate Change

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Len Rosen's picture

August 2, 2015 - Tomorrow the United States will announce regulations to cut greenhouse gas (GHG) emissions from power utilities nationwide.

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