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.
More people have more access to more readers for less money than ever before in history. It means a lot of dross but it means a lot of very talented people can find and nurture a readership in ways that were not possible twenty years ago. From a creative perspective that is all that writing is about.