between a rock and a hard place: lessons on life and success

The Joshua Tree, released in 1987, catapulted U2 to rock stardom and laid the groundwork for their distinction as "the best band in the world" -- a coveted status that was (and continues to be) hard-earned. What drove U2 to stand head and shoulders above the rest?

In 1914 Sir Ernest Henry Shackleton made a bold bet that he and his crew could be the first to cross Antarctica via the pole. But when his ship, Endurance, became trapped in pack ice and was crushed, Shackleton and his men were stranded in the Weddell Sea on an ice floe. How did Shackleton survive against all odds?

Harriet Tubman's life reads like a blockbuster movie plot: Born into slavery in Maryland, she escaped, returned to save her family, worked as an armed scout and spy for the Union Army, and eventually helped dozens of slaves escape to freedom. How did she navigate risk so successfully and learn to thrive?

Inventor, painter, scientist, botanist, geologist, engineer and architect (to name just a few), Da Vinci was the original Renaissance Man -- a dreamer, creative strategist, and thought leader. What role did his insatiable curiosity play in unleashing his talent and fueling his genius?