Dr. Lavie: If glaciers are the buzzsaw that does most of the heavy lifting, then landslides might be the sandpaper or whatever other tool is needed to get into the hard-to-reach crevices that are left. So landslides and not glaciers then would be responsible for keeping mountains more. Gilad: Working out the exact details of these tipping points and just how high a mountain can grow will require other helicopter rights to the Himalayas.
Little is known about why he fled across the border into the hermit kingdom, but securing his release will require some tactical diplomacy. Given the tense relationship between both countries, is Kim Jong Un prepared to come to the table? A look at research which suggests gold might not always be an effective hedge against inflation (08:52). And, why mountains stop growing (15:42).
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