Paired with a channel, Means to restrain, Paired with a colour, Puny fury is pain, The same colour though, Makes one think of rain, Cut off my tail, I'm youngest to reign

Of all the inventions that have been made over the years, I am generally considered to be the most remarkable. What am I?

I have a face but never smile, Two hands that race but stay awhile. I talk without a single sound, Tell you you’re late, then just sit around. What am I?

I hold your thoughts in chalky white, erase me gently, and I’m blank as night. A thousand lessons may pass through, yet each swipe lets me start anew.

One of four that make up the the year, a renewal of sorts, as things warm up a little. One to help things go up and down, it keeps the tension up, while being pushed down. Last is back to the first, but with your clock, you don't fall back, you...