As another candidate throws his hat into the ring, remember that CNN.com Live is your home for the 2012 presidential election!
Today's programming highlights...
8:30 am ET - Casey Anthony trial - Testimony resumes in the trial of Casey Anthony, the Florida woman accused of killing her young daughter.
9:30 am ET - Gulf oil spill hearing - The House Oversight Committee holds a hearing on the recovery efforts in the Gulf Coast following the devastating BP oil spill.
10:30 am ET - 'Food pyramid' replacement unveiled - The days of learning about the "food pyramid" in health class are over. First lady Michelle Obama unveils a new icon for healthy eating this morning.
12:00 pm ET - Romney announces run - Former Massachusetts governor Mitt Romney hopes the second time's the charm as he formally announces a run for the 2012 GOP presidential nomination.
7:00 pm ET - Obama honors Pritzker Prize winner - President Obama speaks at a ceremony commemorating the 2011 winner of the Pritzker Prize for architecture.
CNN.com Live is your home for breaking news as it happens.