Space Junk Catastrophe--How do we deal?

Warning of catastrophe from mass of 'space junk'

The amount of debris orbiting the Earth has reached a critical level. Old satellite parts, solar panels and the odd astronaut's lost glove now pose serious risks to space missions. A report from the International Association for the Advancement of Space Safety is calling for stringent international laws to be brought in urgently to avert a tragedy.

Space Junk
Catastrophe

I am by no means a space expert, but I do have a few questions. One, how is all this debris going to be taken care of? Two, if it is at such a critical level, why do we keep risking lives by sending people up? Three, how can we monitor and regulate all of the debris up there, I mean, when will we know when too much is too much? In light of the recent addition of more debris into space by the US government, just some questions arose in my mind? Looking for some space expertise if you care to share.