Tag Archives: Climate Change

Are Electric Cars Better?

As we all know, Earth is the only planet known to this date which supports life. There is no other planet in this humongous universe which has the qualities of Earth, such appropriate level of oxygen, moderate temperatures and most importantly water. So, keeping our home, Earth, suitable to live should be the first priority but unfortunately, we are destroying it by emitting a tremendous amount of Carbon dioxide (CO2) from driving vehicles. According to  International Council On Clean Transportation, the CO2 emission has decreased from 2012 to 2015 by a small amount but they are looking to reduce it much more by 2020. In 2012, the average CO2 emission for a 1400 kg passenger vehicle was 132 g/km and 130 g/km in 2015 but they are trying to reduce it to 90 g/km by 2020. In 3 years, they were able to reduce CO2 emission by only 2 g/km and by 2020 there is no guarantee of it being reduced by 30 g/km.

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Photo credit: International Council On Clean Transportation

So, a better option is having electric cars, which does not use any gas and saves on CO2 emissions. Electric cars get their fuel from electricity generated by coal, natural gas, hydro, nuclear and wind. So, the CO2 emissions in electric cars are from the electricity source. According to the U.S. Department of Energy, electric cars use the least and gasoline use the most amount of CO2 according to national averages. Annually, electric cars used 5,000 pounds of CO2 equivalent compared to gasoline cars which use 11,658 pounds of CO2 equivalent.

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Photo credit: U.S. Department of Energy

Also, driving an electric car is much cheaper than a gasoline car. According to Transport Canada, traveling 210 km per week at $1.00 gas price, will cost $12.60. But traveling the same distance in an electric car will cost $3.15 with electricity being at 1.5¢ per kilometer. So, driving an electric car can save $9.45 per week and it produces much lower CO2 numbers. Also, it lowers the health and environmental risks associated with higher amounts of CO2 in the atmosphere.

Health risks associated with higher amounts of CO2 in the atmosphere can lead to shortness of “breath, deep breathing, headache, dizziness, vomiting and even death.” Although, emissions of CO2 are lead by major factories as well but gasoline cars are also considered to be a main source.

Carbon dioxide emissions cause environmental issues as well. According to Environmental and Climate Change Canada, CO2 results in melting of glaciers, warmer temperatures, heat waves, burning of forests and heavy precipitation. Also, the environmental changes due to CO2 emissions are dangerous to humans, such as the melting of glaciers will lead to higher sea levels  which can kill lots of people and leave many homeless.

In conclusion, driving electric cars reduces CO2 emissions leading to less health and environmental issues. Also, electrics cars tend to save money which can be used elsewhere.

Short video of emissions by electric cars:

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 Video credit: Union of Concerned Scientists

Hamed Hussaini

February 20, 2016

Melting Icebergs may be Helping to Counter the Effects of Climate Change

When most people think of melting icebergs, they think of it as a negative effect of climate change, either because of the decrease of the albedo effect, the loss of habitat for animals such as polar bears, or the increase in sea level. As it turns out, a recent study suggests that the melting of icebergs may actually be countering the negative effects of climate change.

A press release published in the online magazine Science on January 11, 2016 describes the results determined from the study. It was found that icebergs contain bedrock from when they were once glaciers on land, and when these giant icebergs melt, they release nutrients such as iron into the nutrient-poor oceans of Antarctica, which causes massive phytoplankton blooms.

Phytoplankton blooms form around icebergs similar to this one that is forming around Greenland. Source: wikimedia

Phytoplankton blooms form around icebergs similar to this one that is forming around Greenland. Source: wikimedia

Phytoplankton, which are photosynthetic microorganisms at the base of the ocean’s food chain, have a positive impact on climate change because they take up the greenhouse gas CO2 in the atmosphere in order to grow. Satellite data collected from 2003 to 2013 show that these phytoplankton blooms occur up to hundreds of kilometers away from the icebergs, and can last up to a month after the iceberg passes.

A video released by Stanford University explains how these Antarctic phytoplankton blooms form:

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The results from this study predict that the nutrients and minerals released by giant Antarctic icebergs (over 18 kilometers long) will absorb as much as 20% of atmospheric CO2 absorbed by all marine life in the southern seas. That amount is equal to between 44-146 million metric tons of CO2, which reduces a small amount of the 35.3 billion metric tons of CO2 burned by fossil fuels in 2013.

This press release presents important scientific research that could affect the way scientists view climate change. Melting icebergs will no longer be viewed in a strictly negative light, as the phytoplankton blooms surrounding melting icebergs absorb CO2 from the atmosphere, and are acting as a negative feedback on the CO2 humans are releasing into the atmosphere from burning fossil fuels. These blooms can also have a positive impact on the many species that feed off of phytoplankton.

According to the article summarized in the press release, these phytoplankton blooms absorb only a very small amount of the total atmospheric CO2. Is it enough to substantially offset the amount of CO2 being pumped into the atmosphere by fossil fuels? No predictions are offered in either the press release or in the article itself. As this is currently the only study being done on the beneficial effects of melting icebergs, we will need to stay tuned for further research in order to see if there truly are positive impacts on climate change from melting icebergs in the Antarctic.

– Emma Peachey, January 18, 2016