Balloons In Spaaaace

Problem: thousands of objects, one square centimetre or larger, in orbit around the earth.

Solution: tie big balloons to dead satellites and let them increase the orbital drag, which should eventually drag them into the atmosphere where they'll burn up.

Problem: how do you tie big balloons to dead satellites?

Solution: An orbital robot, the design and implementation of which is left as an exercise for the reader.

Don't you love science!