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• pam warhurst: how we can eat our landscapes
• pamela meyer: how to spot a liar
• pamela ronald the case for engineering our food
• pamelia kurstin plays the theremin
• pankaj ghemawat: actually, the world isn't flat
• paola antonelli previews "design and the elastic mind"
• paola antonelli treats design as art
• paola antonelli: why i brought pac-man to moma
• paolo cardini: forget multitasking, try monotasking
• parag khanna how megacities are changing the map of the world
• parag khanna maps the future of countries
• pardis sabeti how we'll fight the next deadly virus
• a.j. jacobs how healthy living nearly killed me
• patience mthunzi could we cure hiv with lasers
• patricia burchat: shedding light on dark matter
• patricia kuhl: the linguistic genius of babies
• patrícia medici the coolest animal you know nothing about ... and how we can save it
• patricia ryan: don't insist on english!
• patrick awuah on educating leaders
• patrick chappatte: the power of cartoons
• paul bennett finds design in the details
• paul bloom can prejudice ever be a good thing
• paul bloom: the origins of pleasure
• paul collier on the "bottom billion"
• paul collier's new rules for rebuilding a broken nation
• paul conneally: digital humanitarianism
• paul debevec animates a photo-real digital face
• paul ewald asks, can we domesticate germs?
• paul gilding: the earth is full
• paul greenberg the four fish we're overeating—and what to eat instead
• paul kemp robertson bitcoin sweat tide meet the future of branded currency
• the ethical dilemma of designer babies
• paul maccready flies on solar wings
• paul maccready on nature vs. humans
• paul moller on the skycar
• paul nicklen tales of ice bound wonderlands
• paul pholeros how to reduce poverty fix homes
• a.j. jacobs how healthy living nearly killed me
• paul romer the world s first charter city
• paul romer: why the world needs charter cities
• paul root wolpe: it's time to question bio-engineering
• paul rothemund casts a spell with dna
• paul rothemund details dna folding
• paul sereno digs up dinosaurs
• paul snelgrove: a census of the ocean
• paul stamets: 6 ways mushrooms can save the world
• paul tudor jones ii why we need to rethink capitalism
• paul zak: trust, morality—and oxytocin?
• paula hammond a new superweapon in the fight against cancer
• paula johnson his and hers ¡­ healthcare
• a.j. jacobs how healthy living nearly killed me
• paula scher gets serious
• pavan sukhdev: put a value on nature!
• pawan sinha on how brains learn to see
• pearl arredondo: my story, from gangland daughter to star teacher
• what young women believe about their own sexual pleasure
• penelope boston says there might be life on mars
• pete alcorn on the world in 2200
• peter attia what if we re wrong about diabetes
• peter diamandis: abundance is our future
• peter diamandis on our next giant leap
• peter diamandis on stephen hawking in zero g
• peter donnelly: how stats fool juries
• peter doolittle how your working memory makes sense of the world
• peter eigen: how to expose the corrupt
• péter fankhauser: meet rezero, the dancing ballbot
• peter gabriel fights injustice with video
• peter haas: haiti's disaster of engineering
• peter hirshberg on tv and the web
• peter molyneux demos milo, the virtual boy
• peter norvig: the 100,000-student classroom
• peter reinhart on bread
• peter saul: let's talk about dying
• peter singer: the why and how of effective altruism
• peter tyack: the intriguing sound of marine mammals
• peter van manen how can formula 1 racing help babies
• peter van uhm: why i chose a gun
• peter ward on earth's mass extinctions
• lifelike simulations that make real-life surgery safer
• phil borges on endangered cultures
• phil hansen: embrace the shake
• phil plait: how to defend earth from asteroids
• philip evans how data will transform business
• philip k. howard: four ways to fix a broken legal system
• philip zimbardo: the psychology of evil
• philip zimbardo: the psychology of time
• the unexpected challenges of a country's first election
• philippe petit: the journey across the high wire
• philippe starck: design and destiny
• pia mancini: how to upgrade democracy for the internet era
• pico iyer: the art of stillness
• the beauty of what we'll never know
• pico iyer where is home
• thomas dolby: "love is a loaded pistol"
• pranav mistry: the thrilling potential of sixthsense technology
• prosanta chakrabarty clues to prehistoric times, found in blind cavefish
• felix dennis: odes to vice and consequences