Angélica Rivera may have dazzled on the TV screen, but her shady relationship with a government contractor has wreaked havoc on her husband's presidency.

Marriage Vow

Will Margarita Zavala follow her own path, or would she govern Mexico as the second coming of her husband, the much-reviled ex-president Felipe Calderón?

Pyramid Scheme

The painstaking exploration of a tunnel beneath the Temple of the Feathered Serpent has yielded amazing treasures, and may soon lead to the tomb of the leaders.

Yanqui Come Home

The president deftly navigated the treacherous waters at the Panama summit. But challenges remain.