In the mid-century, the auto industry was relatively unregulated and vehicles were big, loud, and dirty, but legislation in the early 60s started to target air pollution and automobile safety through efforts like emission standards, which required automakers to cut hydrocarbon and oxides of nitrogen emissions by more than 50% by 1975, and essentially made the popular muscle cars of the 50s and 60s extinct.

These low-emission zones are all over Europe.

I'm going to ask you a couple of questions to get to know you better, and some questions on a general topic. Why are you taking this exam? The IELTS exam is important for me as I'm planning to pursue my PhD in quantum computing in the United States, and simply put, it is an integral part of my academic CV. Where do you live? Well, I live in the capital of Karnataka, Bengaluru, in a three-bedroom detached house with my parents and siblings. Let's talk about cars and buses. How often do you use a car? How about a bus? I use my car quite often, at least once or twice a day to either get to work or school. I just used my car an hour ago to get to this exam here. Since I have a car, I don't quite use the bus. Where is the last place you went to in your car? As I just said, I used my car an hour ago to get here to this exam. I parked it a couple of blocks away from here. When is it a good idea to take the bus instead of a car? Well, I would say it's a good idea to take the bus instead of a car if a person's been drinking or is unable to drive. It is dangerous to drive if a person is impaired or, you know, not fit to drive due to an injury. When I sprained my ankle last year, I took the bus for a whole week. When is a car better to use than a bus? I would say using a car for long trips especially is better because it's super convenient and comfortable. You get to stop whenever you want to and you can play your own music. Has bus transportation in your city changed in the last 10 years? Oh yes, the transit system has drastically changed in the past decade. There are newer routes and modern buses compared to back in 2010. I would say that it's a good step going forward because buses have lower emission. If you could buy any kind of car, what would you buy and why?

So it's not the satellites that is emitting, because theoretically it cannot, but all the equipment, all the electrical circuits in the satellites are kind of producing a backdrop of emission.

If we then split the transmitted or scattered light apart into its constituent colors using a prism or diffraction grading, we can see a molecule's light absorption fingerprint, or its light emission fingerprint.

It's meant to reduce planet warming emission, but drivers here at home don't think it should cost them.

Its emission of the light is adjustable in intensity and temperature, from warm to very warm, through the optical sensor, making it ideal both as an ambient light or a reading lamp.

solar energy, prices are coming down, so the electricity sector has to either be able to store that energy or have other zero-emission sources to maintain the reliability that we all depend on.

So it will cut down the carbon emission, also helps to create more carbon credits for the operators.

The postage stamp number comes from research done by, among others, the Congressional Budget Office that refers to what's the cost of the carbon emission reductions that we're going to experience.