Is it true that we are not alone in the universe?

Even if there´s not others intelligent beings in the universe (as seen sometimes on tv), i bet there´s life at a microscopic level,

i agree.because there wont be any reports of UFO sightings if we are alone in there universe.if our planet was inhabited by humans,im sure other planets also have their own inhabitants....with the vast realm of the universe,its impossible that we are the only living things in the whole of the universe.

Scientists are supposedly rational creatures.Hence the statement you make that scientists are saying that we are not alone in the universe cannot be generalised.A true scientist never states something as the truth until and unless he has sufficiently found enough reasons and evidence to buttress that truth.
Nevertheless while on the topic about aliens I feel that it cannot be overruled.Life may exist but it is also possible that it exists in a form or dimension unknown to us.

Of course we are not alone...just look at the size of the universe...I know you cant see it for yourself but you can read up on it and educate yourself....Dont you think that theres the slightest chance of finding other life out there...i feel it will be just as intelligent as ours provided it has had time to evolve...anyways its true, we are not alone in this universe.