This iframe code is improper.
Try:
<iframe src="http://embed.verite.co/timeline/?source=0ApnNAEv3xtDldGxkV0h1VUk3SU52Q0JOU2NmVUhheVE&font=Bevan-PotanoSans&maptype=toner&lang=en&height=650" width="100%" height="650" frameborder="0"></iframe>Test here:
http://www.w3schools.com/tags/tryit.asp?filename=tryhtml_iframe_frameborder