Lost world -- what happened to Mars?
(CNN)-- You may have heard it before: billions of years ago Mars probably looked more like Earth does now, with clouds and oceans and a much thicker atmosphere. It may even have had some type of microbes. But now it's a barren, frozen desert. So what happened?
Freedom of Expression, Defamation of Religion, and the Hypocrisy of Limits
This lack of opposition, the abuse of such laws and the scapegoating of minorities and dissenters in a long list of Muslim nations appear to justify the alarm bells and concerns expressed by advocates of freedom of expression. It is high time for the ...
Firefox 3.6 is Mozilla's Windows XP
Mozilla has unleashed Firefox 8.0. But despite this aggressive upgrade schedule, Mozilla is having a hard time convincing Firefox 3.6 users to upgrade. Here are worldwide usage share figures from StatCounter for the past 7 days: According to the data ...
What price of corn is needed to make ethanol blends competitive?
In reality, the ethanol content of E85 can vary between 51 and 83 percent so that the energy value also varies ... With that important caveat, the slope of the line (2.65) indicates for each $1 change in the retail price of gasoline the breakeven price ...
What we've done on Mars, and what's next
(CNN)-- The much-celebrated Mars rover Curiosity is headed for Mount Sharp, where it will help scientists explore the question of life on Mars as it climbs up and up. Meanwhile, however, NASA's budget for planetary exploration is slated to go down ...