tungwaiyip.info

home

about me

links

Blog

< June 2008 >
SuMoTuWeThFrSa
1 2 3 4 5 6 7
8 91011121314
15161718192021
22232425262728
2930     

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

Plastic bag pollution

Recently I have come to aware of the issue of Great Pacific Garbage Patch from the media. It is large region in the Pacific Ocean that has accumulated much man-made garbage carried there by ocean current. Amount them are many plastic trash. On one hand plastic are very durable because they are not biodegradable. On the other hand plastic are photodegradable, meaning under the exposure of sunlight, they will slowly break down into smaller and smaller pieces. The result is a high concentration of pollutant in the water that is nearly impossible to clean up.

To most people this problem is nothing more than just a scientific interest. After all we don't venture into the middle of the ocean. So this problem is out of sight, out of mind. But today I have personally experienced the effect of photodegradation right in my own backyard.

Two years ago my mother has spent several months in my home. In her spare time she has built a vegetable garden in the yard. Being, shall I say, a resourceful person, she has reused many trash items to build a trellis. For example she scavenged many plastic bags that we would have throw away and used it as ties to the stakes.

Unfortunately, after she has left, we have not given the garden proper upkeep. It was quickly overrun by weeds. And finally I have to clear it out. As I was dismantling the trellis, I found the plastic bags have become very flaky. After exposed in sunlight for 2 years, the have all photodegraded. As I tried to remove them, they just break down into small pieces of white plastic and scattered all over the garden. There is just no way for me to mop up these tiny pieces from the soil. Who would have thought plastic bags can turn into a much bigger headache after it has degraded like this.

2008.06.14 comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

Cancer blood test ‘enormously exciting’ (19 Jan 2018)

 

Turpin case: California couple deny torturing 'shackled siblings' (18 Jan 2018)

 

Jacinda Ardern: New Zealand PM reveals she is pregnant (19 Jan 2018)

 

US government shutdown: House backs funding bill and sends it to Senate (19 Jan 2018)

 

Fishermen escape crash by split-second (18 Jan 2018)

 

Uber co-founder Travis Kalanick a billionaire after investment deal (19 Jan 2018)

 

Deadly storm Friederike causes Dutch and German transport chaos (18 Jan 2018)

 

'Shaking' Malaysia Airlines flight turns back to Australia (19 Jan 2018)

 

Ukraine crisis: Kiev defines Russia as 'aggressor' state (19 Jan 2018)

 

Pope Francis arrives in crisis-hit Peru (19 Jan 2018)

more »

 

SF Gate

 

Bay Area News (7 Jan 2012)

 

City Insider (11 Feb 2012)

 

Crime Scene (13 Feb 2012)

 

C.W Newius Column (10 Jan 2012)

 

C.W. Nevius Blog (11 Feb 2012)

 

Education News (10 Jan 2012)

 

KALW (11 Feb 2012)

 

Matier and Ross Blog (11 Feb 2012)

 

Wells Fargo apologizes for glitch that emptied out some bank accounts (18 Jan 2018)

 

YouTube’s eyes may beat AI; DoorDash and charity cash; dumping opioids (18 Jan 2018)

 

Ship traffic, Jan. 19 (18 Jan 2018)

 

Business News Roundup, Jan. 18 (17 Jan 2018)

 

Bitcoin plunges — is it just a normal correction or a bubble deflating? (17 Jan 2018)

 

Google selling AI for building AI (17 Jan 2018)

more »

 


Site feed Updated: 2018-Jan-18 21:00