The protective bubble around the sun that helps to shield the Earth from harmful interstellar radiation is shrinking and getting weaker, NASA scientists have warned.

http://www.telegraph.co.uk/news/worl...shrinking.html

This significant development must be investigated in light of two other recent developments, first is "Our solar system is passing through an interstellar cloud discovered by Voyager

http://science.nasa.gov/headlines/y2...ec_voyager.htm

Second one is Earth's north magnetic pole racing towards Russia due to core flux

http://in.news.yahoo.com/139/2009122...-racing-t.html