Answer:
I am a busy worker who is a water mammal.
In all the world none can compare I am a tiny weaver my deadly cloth so silky and fair.
Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers magazines and journals.
We are little airy creatures all of different voice and features one of us in glass is set. One of us you'll find in jet. Another you may see in tin. And the fourth a box within. If the fifth you should pursue it can never fly from you.
I look at you, you look at me. I raise my right, you raise your left. What am I?
I flow from the Homerβs mouth when he sees doughnuts.