Category Archives: Environment

Top 10 Countries with Poor Air Quality: PM2.5 Exposure in 2019

Photo by Vitaly Vlasov on Pexels.com

PM2.5 particulate matter is 2.5 micrometers in diameter or smaller, and can only be seen through an electron microscope. PM2.5 is capable of entering the bloodstream via the lungs. These fine particles are produced from all types of combustion, including motor vehicles, coal-burning power plants, waste burning, residential wood burning, forest fires, agricultural burning, and some industrial processes.

Noise Pollution in Nepal

Regarding noise pollution, Sound Quality National Standard 2012 is the only benchmark set by the Government of Nepal.

Moreover, Nepal does not have any specific regulation, robust implemented/enforced rules or long term concrete plans to control noise pollution in various urban cities. This is 2021 and it is sad to know that the reality on the ground is still a far cry from the national standards; except during the Covid-19 lockdown hours, of course.

Where,

L10 is the sound level in dB that is exceeded 10% of the time over measurement period.

L50 is the sound level in dB that is exceeded 50% of the time over measurement period.

L90 is the sound level in dB that is exceeded 90% of the time over measurement period.

Leq is the average equivalent continuous sound level over a particular time period (T)

Lmax is the maximum sound level measured during the measurement period with the sound
meter set on SLOW response.

Lmin is the minimum sound level measured during the measurement period with the sound meter set on SLOW response.

Noise pollution has been ignored in Nepal for a long time now and the situation is even worse in big cities like Kathmandu.

(Source: Noise Level Status in Siddharthanagar Municipality, Rupandehi, Nepal, Lakshmi Nath Bhattarai)

Mt. Everest Moments: 2019 VS 2021

“This is the route to the summit of Everest a few days ago. As you all know, back in 2019 a photo of mine showing a queue to Everest’s summit went viral around the world. However, a picture only tells the story of one moment, and so I wanted to show you another moment on the world’s highest mountain. There have been more permits given this year, but I hope this goes to show the other side of the story. I believe in protecting these beautiful mountains and helping the communities that both live and enjoy them. That’s why I set up the Nimsdai Foundation and Big Mountain CleanUp to try and create positive change. I believe we need to have the conversations around protection of the mountains, recycling, but we must always remember that we must reflect the whole story. Not just one moment, but all the moments that exist here in the mountains.”

Source: Nirmal Purja @RONB; Viber, 5 June 2021