Nobel Laureate in Physics Anthony Leggett (Illinois) describes the so-called Anthropic Principle that some invoke to answer the "fine tuning problem" of cosmology.

Astrophysicist Scott Tremaine (Institute for Advanced Study) describes his experiences at developing our understanding of "shepherding moons" and how it related to the rings of Saturn and Uranus.

Award-winning violinmaker and acoustical researcher Joseph Curtin describes how, despite the fact that the violin is often said to be a perfect design, there are many ways it can be improved upon.

Nobel laureate in Physics David Politzer (Caltech) uses a banjo to demonstrate how octaves and harmonics arise from vibrating strings.

Nobel Laureate Roger Penrose, University of Oxford, describes why he believes that inflationary cosmology doesn't explain the mystery of why the universe began in such an unlikely, very smooth state, arguing that had it started out...

Marine biologist Edie Widder at the Ocean Research & Conservation Association describes how she developed an innovative undersea camera that significantly contributed to our understanding of marine life.

Psychologist Carol Dweck (Stanford) discusses the effect of community values on mindsets.

Stanford University psychologist Philip Zimbardo describes a formative influence he had as a teenager that tangibly demonstrated the strong impact situational factors have on group behavior.

Cognitive scientist Victor Ferreira (UC San Diego) describes a core question in linguistics concerning how language and thought are related.

Cognitive scientist Victor Ferreira (UC San Diego) sketches out an intriguing future experiment he'd like to conduct to probe the difference between meaning-level and grammar-level effects.

Award-winning violinmaker and acoustician Joseph Curtin describes how many musicians would benefit from learning to listen like recording engineers.

Stanford psychologist Carol Dweck describes how we can be routinely deceived into concluding that highly accomplished people are just “naturally gifted” at what they do, ignoring all the effort they put in and challenges they overcame.

Cognitive scientist Victor Ferreira (UC San Diego) discusses the Sapir-Whorf hypothesis, while admitting that most cognitive scientists opt for the middle road between the two intellectual poles.

Neuroscientist Kalanit Grill-Spector (Stanford) describes a discovery she made with her graduate student of a certain region of the brain.

Psychologist and memory scientist Elizabeth Loftus (UC Irvine) speculates on the sudden boom in so-called "repressed memory therapy" that led to a spate of accusations of past abuses.

Psychologist Stephen Hinshaw (UC Berkeley) traces our understanding of ADHD from the great influenza epidemic of the early 20th century to the present day.