At a loss

Where to start? I suppose the headline is as good a place as any. Looks to me as though the a should not be there. From "Bad boys more appealing to women at a certain times of the month, study shows" on Yahoo! Canada Shine on May 18, 2012. Then,

the article's opening two paragraphs both have errors. In the first one, the word to should be inserted between attracted and guys. In the second one, either it's should be inserted between apparently and your, or that should be removed. Click an image to enlarge it.