Want to stay cool this summer? Try living in a cave. Or a boulder. Six crazy cool houses for sale. More
Hugh Hefner's original palace, located on Chicago's Gold Coast, is now condos -- and one is for sale for $2.9 million. More
Just as the world's biggest cruise ship, Oasis of the Seas, took its maiden voyage, plans were announced for the world's most luxe ocean liner: The Utopia. More
When it comes to in-flight pampering, the amenity kits offered by these 10 airlines are the ultimate in luxury More
From a text therapy platform to apps that push you reminders to breathe, these self-care startups offer help on a daily basis or in times of need. More
From Uber's flying cars to the Hyperloop, these are some of the neatest transportation concepts in the works today. More
