Ask Ethan: What would the Universe be like without dark matter? - Big Think

Read also:

• How do I explain to my husband that my 19-year-old son has accidentally gotten me pregnant?
• What do people aim for when they meditate, and how do they do it properly?
• What is the reason for the high rate of unmarried individuals in America, particularly among males?
• Can cheating be a result of not truly loving or caring for someone, or is it sometimes just a spur of the moment decision?
• Why do you think most harem anime and manga have lame male protagonists that would be considered losers and pathetic by most people?
• I see ugly guys dating gorgeous, "hot" women all the time. I, too, am not very attractive but I'm not doing well with the ladies. What's their secret?
• How is it, in the USA, a country with 334 million people, the choice of President comes down to two aged men, one of whom is a liar as well as a criminal, one who appears to be on his way to dementia. Surely a democratic country can put up better?
• What's the most trivial thing that ever made you go to the doctor?
• Apple’s Craig Federighi on the long road to the iPad’s Mac-like multitasking - Ars Technica
• Is it possible to make cars that run on water instead of gasoline or other fossil fuels? Why haven't we done so yet?