This is what customers pay us for - to sweat all these details so it's easy and pleasant for them to use our computers. We're supposed to be really good at this. That doesn't mean we don't listen to customers but it's hard for them to tell you what they want when they've never seen anything remotely like it.
We can in fact first place the beam of rays of moving positive atomic ions in a plane perpendicular to the axis in which we see the spectral lines emitted by them.
Climate change is a global issue - from the point of view of the Earth's climate a molecule of CO2 emitted in Bejing is the same as a molecule emitted in Sydney.