Aug 27, 2014 — We've learned so much, yet we still don't know the composition of 95 percent of the cosmos. Commentator Marcelo Gleiser says it is good to stay humble and keep an open mind as the search continues.
Aug 26, 2014 — Your birth and death define the end points of a line in the four dimensions of space-time, explains commentator Adam Frank. All the moments and all the places in between fill out this line.
Aug 25, 2014 — The complex science of fetal and early childhood development is sometimes distilled into a single, unhelpful message: It's all about mom. Psychologist Tania Lombrozo explains how values can play in.
Aug 22, 2014 — The scent of fresh pencils is in the air, and homework assignments are around the corner. In honor of back-to-school season, author Alexander Aciman recommends The Lost Estate by Henri Alain-Fournier.
Aug 22, 2014 — When he was young, Michael Arceneaux was a model Catholic who never missed a mass, but when he was asked to join the priesthood, it didn't make him come to Jesus — it made him come out of the closet.
Aug 22, 2014 — Regular political commentators, E.J. Dionne of The Washington Post and Reihan Salam of The National Review, discuss the killing of American journalist James Foley and the ongoing conflict in Ferguson, Mo.
Aug 22, 2014 — What makes some middle-aged men and women act like children at the baseball park? Commentator Alva NoŽ wonders about that distinct attitude of love and longing that we call "being a fan."
Aug 21, 2014 — Are trigger warnings a good idea when teachers ask students to consider material about emotionally wrenching topics? Anthropologist Barbara J. King says yes — in some cases.
Aug 21, 2014 — Commentator Sandip Roy, an editor with Firstpost in India, has an appreciation of yogi B.K.S. Iyengar. Iyengar, who died on Wednesday, helped to introduce the practice of yoga to the Western world.
Aug 20, 2014 — Is immortality something desirable, or a many-headed monster? Commentator Marcelo Gleiser says that as medical science extends our lifespan, the question becomes more real all the time.