Tonight: Text 360

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AC360°

Tomorrow, BP plans to pump thick, viscous fluid twice the density of water into the site of the leak to stop the flow so the well can then be sealed with cement - the "top kill" procedure.

CNN's Ed Lavandera and David Mattingly have been reporting on the ground for the last month, following every turn of the Gulf oil spill. Do you have questions for them? Let us know!

Send us a text message with your question. Text AC360 (or 22360), and you might hear it on air!