Air Date: Jun 04, 2014 12:00 AM ET
Over recent years, monarch butterfly numbers in North America have been in massive decline. But new research suggests we may have been getting the reasons for the drop in numbers all wrong.
Top News Headlines
- 'Do you accept the challenge?': Crime Stoppers asks public to ID woman in white powder confessional
- 'I can't believe she's really gone': Family, friends mourn 13-year-old found dead in B.C. park
- #BoycottSearsCanada: Retailer faces 'PR nightmare' over treatment of laid-off workers
- Death toll rises to 9 in Texas human smuggling case