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Rival politicians take shots at Sen. Mitch McConnell at a Kentucky picnic.
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Yuck or yum? Burger grown in lab gets taste-tested. CNN's Jeanne Moos reports some folks have a cow over it.
RELATED STORY: Have a taste of the world's first stem cell burger
CNN's Tom Foreman joins former General James A. "Spider" Marks to discuss military preparedness against terrorism.
Brian Todd reports on Ibrahim al-Asiri, al Qaeda's master bomb-maker who could be involved in this current threat.
RELATED STORY: Prison breaks are among reasons for heightened security
Officials say al Qaeda's leader ordered a terrorist act, and that is what led to the closure of U.S. embassies.
RELATED STORY: Source: al Qaeda leader urged affiliate to 'do something'