Near Miss: Asteroid takes Earth by surprise

[Gary Nunn]

March 19 �  An asteroid as wide as a Boeing 747 narrowly missed Earth this
month � and we never knew it was coming. The case of asteroid 2002 EM7 has
drawn attention to the gaps in the planet�s infant system for monitoring
potential threats from space.

Complete article here.....

http://www.msnbc.com/news/177595.asp?pne=msn