Scientists set out to study Earth’s most forbidding – and Mars-like – locations

If we want to find life on Mars it might help to study the most forbidding places on Earth. And it turns out there are four places so inhospitable – too cold, dry, hot or salty – that match the conditions on Mars. A team of scientists visited these sites to see if life can …

10 years after 9/11, have we changed?

US oil consumption has remained steady since 2000 when it was 19.7 million barrels of oil/day. In recent years a slight dip has occurred maybe due to the recession or due to structural changes (improved car MPG), and is now at 19.2.