MorethanfourmillionwerewithoutpowerinTexasonTuesdayafter a raredeepfreezeforcedthestate's electricalgridoperatortoimposerotatingblackoutsbecauseofhigherpowerdemandandatleastonepersondied, HoustonpolicesaidonTwittertheysuspectedthecauseofdeathandthefatalitytobequoteextremelowtemperatures.