A Shell safety engineer talks about managing hazards when a potentially harmful event in oil and natural gas production takes place - a fire or an explosion.
Ka'iulani Murphy talks about "non-instrument" navigation, steering a double-hulled canoe across the sea with only celestial bodies and waves to guide it.
Gourley says that mathematics can help predict the timing and size of attacks in certain types of war, regardless of where, and why, these attacks are taking place. Read more about the mathematics of war.