Historian Donald Sassoon tells Jim Fleming that the Mona Lisa is a great painting, but that other factors conspired to make it an international icon.
Intelligent. Optimistic. Curious.
Audio
Contemplating the multiverse is mind-blowing, but if you want a truly earth-shattering controversy in physics, you have to go back 500 years to Copernicus' radical theory. Dava Sobel tells his story.
A few years ago, poet Christian Wiman picked up his pen after a three-year hiatus, when he fell in love and was diagnosed with cancer. Listen in as he reads a poem from "Every Riven Thing," the book of poems that followed. You can also hear our interview with him about the collection.
Edmund Morris says Theodore Roosevelt was a force of nature - man of towering intellect, boundless physical energy and firm convictions whose greatest achievement as President was his commitment to conservation.
Physicist Michio Kaku's Dangerous Idea? A virtual "library of souls."
Emily Rapp had her foot amputated when she was 4, and the rest of the leg at age 8.
Copenhagen, Johannesburg, Kyoto, Rio... it can be hard to keep track of all the international summits where global leaders have tried to tackle climate change. Do international climate negotiations do any good? Author and lobbyist Felix Dodds thinks so. Here's why...
Whether or not you're a person who cares about fashion, how and where our clothes are made has environment, social, and economic consequences. The global garment industry is a trillion dollar business, that employs millions of people. Elizabeth Cline is an advocate for so-called "slow fashion."
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