Posts tagged ‘reduce’

The Meaning of the Numbers Inside the Recycling Symbol

By: Chad Upton | Editor

I remember going to the grocery store as a small child. It seemed like we were there for hours before finally packing all of our purchases into large brown paper bags. A few years later they phased out paper bags over concern for the trees required to make the bags.  They were replaced with plastic bags and we have used them almost ever since. But, A few years ago, paper bags started appearing once again. Although they’re made from trees, those are pretty easy to grow compared to the raw materials of plastic.

It seems like everything is made from plastic now. I did a bit of dumpster diving tonight to find out how much. I went through my recycling bin looking for things with the recycling symbol on them — I guess that probably doesn’t really count as “dumpster diving.” These numbers only appear inside the recycling symbol on plastic products.

Plastic is a petroleum product, meaning the raw material used to create plastic is oil. It’s no secret that oil is one of the most in-demand natural resources and for a variety of reasons oil prices have sharply increased over the past 10 years. It’s not just the fuel companies who are affected by the increasing price of oil, but also plastic manufacturers. Both of these groups have to pass those increased costs on to their customers, and those businesses pass it on to their customers. Somewhere down the line, that customer is you and you’ve obviously noticed at the gas pump.

But, you may not have noticed the increase on plastic prices, at least not directly. Depending on where you live, you may have noticed a big or small push for you to use (or buy) reusable grocery bags. Of course these are great for the environment, but they also save the grocery store a lot of money on plastic bags, which have become significantly more expensive in the past few years. In some places, you even have to pay extra if you want plastic bags. (more…)

February 9, 2010 at 1:22 am 7 comments

Idling a Cold Engine Is GOOD For The Environment

You may notice when you start a cold vehicle, its exhaust is visible at first and disappears after a few minutes. Here’s why.

Technically, modern vehicles do not require much warm up time before you can drive them; advanced lubricants and materials allow the vehicles to be driven shortly after a cold weather start. Of course, you may want to warm your car for your comfort and surprisingly, to reduce emissions.

This is not intuitive, unless you understand the emission control systems on modern vehicles.

The first system is called Exhaust Gas Recirculation, and it’s probably obvious from the name: it routes exhaust gases back into the engine. The vehicle computer system monitors and controls this process to lower the amount of Nitrogen Oxides, precursors to smog and acid rain, that are created in the engine and then expelled from the tailpipe. Depending on your vehicle, this system will not operate in certain conditions, for example: low engine temperatures.

Vehicles also have a component in their exhaust system that converts various pollutants into less harmful gases with various catalysts. That conversion occurs in the catalytic converter, and that chemical reaction doesn’t happen when the catalytic converter is cold.

According to WP, some catalytic converters can take up to thirty-minutes to reach ideal operating temperature. That isn’t to suggest you should wait that long before driving your car — there are countermeasures in many cars that make it effective long before that.

When your car is at idle, it uses less gas and releases less pollution than when you are driving it. Getting your emission system to an effective point before driving it helps reduce overall emissions. For my car, it take about 3-5 minutes before the exhaust is invisible and that’s about how long it takes to clear the snow anyway. It’s not an exact science and it varies by car and by temperature.

BrokenSecrets.com

Sources:  WP, WP, WP, EPA, GM

Photo: steveyb (Creative Commons)

December 14, 2009 at 12:53 am 2 comments


Follow Broken Secrets

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 5,750 other followers

Big Awards


Best Personal Blog/Website (People's Voice)


W3 Award - Copy Writing

Read Secrets on Your Kindle

Categories

Play Hashi Link

Featured by…

• Yahoo
• Business Insider
• NPR
• BBC
• Smithsonian Magazine
• USA Today
• AskMen (and many more...)

Contact Info


%d bloggers like this: