Harvard's Avi Loeb shares how an interstellar object named Oumuamua could actually be a piece of technology from intelligent life outside the solar system. Jill Tarter of the SETI Institute searches for extraterrestrial life.

Tobias Capwell is the Curator of Arms and Armour at the Wallace Collection in London and jousts semi-professionally. "In the Same Breath" and "Captains of Zaatari" from the Sundance Film Festival.

Rich Cohen shows the lengths that some parents will go to help their children reach youth hockey victory in Connecticut. Arnold Rosen shares the joy of being a Band Grandpa.

British historian Gareth Russell explains how six first-class passengers on the Titanic showcase the tensions of Edwardian society. Historian Douglas Smith separates myth from reality in the story of Rasputin.

Michael Butler Brown has recently documented the first known dwarf giraffes and is using it to increase awareness of declining giraffe populations. Producer Tennery Taylor discusses the new films at the Sundance Film Festival this year. Sharon Marcus reveals why we're so enamored of celebrities.

Claire McNear explains just how much work goes on to make the game show Jeopardy a reality. Author Mary Pilon reveals scandal in the history of the famous board game Monopoly. Karin Kjernsmo of the University of Bristol shares how animals use iridescence as camouflage.

Andrea Nguyen is a master of Vietnamese pho and shares the secrets to making excellent pho at home. Creator of YouTube channel "Pasta Grannies" Vicky Bennison chats about unique and tasty Italian food. Karl de Smedt of Puratos, the world's only sourdough library.

Russell Shorto digs into his own family's past to learn more about his grandfather, a small-town mobster. Scott Seligman explains how Orthodox Jewish housewives boycotted kosher beef in 1902, taking on a meat monopoly.

Quintin Lake took 5 years to walk the 7000 miles of British coastline and take photos along the way. Frances Mayes shares the best-kept secrets of Italy and how to get the most out of your visit once you can fly there yourself.

Some supernatural events can be explained away. But not all.