Wouldn't it be more worthwhile to worry about dark comets than global warming?

[peterejungmann]

This is a potential real threat, that we could do something about if we worked on the technology, would this effort be a better use of our resources?

http://www.telegraph.co.uk/scienceandtechnology/science/space/4592130/Unseen-dark-comets-could-pose-deadly-threat-to-earth.html