Leading scientists discuss their work and the larger questions of humankind's existence.
第 4 集
Climate Change: Why Do So Many Tornadoes Strike the U.S.?
Severe weather expert Jeff Halverson explores why the USA is such a hotbed for tornadoes.
第 9 集
Climate Change: Catastrophic Consequences - Katrina and Sandy
Severe weather expert Jeff Halverson reveals the root cause of high death tolls and devastation from hurricanes Katrina and Sandy.
第 7 集
Astronomy: How Many Stars and Planets?
Lowell Observatory astronomer Nick Moskovitz surveys the number of stars and planets believed to exist in the universe.
第 13 集
Astronomy: Robotic or Manned Missions?
Lowell Observatory astronomer Nick Moskovitz expounds on the importance of manned space missions.
第 2 集
Brain Health: Are Teenagers Better at Multitasking?
Frances Jensen, neurologist and author of "The Teenage Brain," investigates whether adolescents are better at multitasking than adults.
第 3 集
Brain Health: Why Do Teenagers Sleep So Much?
Frances Jensen, neurologist and author of "The Teenage Brain," uncovers the truth about bizarre sleep patterns and fatigue in adolescents.