More riddles....

Guess the first one down there isn't popular, and the second one's drawn a few weird ans. Have to say, quite impressed with the "someone" who posted it!

Understand the importance of not letting emotions affect ur work today. Fantasy football blues......

Anw, more riddles:

1. In only one direction it flows, going faster, going slower, yet it can't be seen, touched nor heard. What's it?

2. A cause for different evolutions to occur. Comes in different forms for different purposes. Seemingly solid, yet no living person's ever held it or touched it with his or her hands before. (Not a fair riddle. :p)

3. The shortest thing in the world, yet the longest it can be as well. Guess what?

Don't bother trying number two. I'll be very very surprised if someone can get that ans.

Have fun!