ConocoPhillips (NYSE: COP ) reported a 58% drop in its fourth-quarter earnings. ConocoPhillips' quarterly profit fell to $1.43 billion, or $1.16 per share, from $3.39 billion, or $2.56 per share, in the year-ago period. Excluding one-time items, its adjusted earnings declined to $1.43 per share from $1.55 per share. Its sales