The comet ISON, discovered by two amateur astronomers last year, will zoom past the Earth next fall. But where did it come from? Astronomer Andrew Fraknoi says a passing star could have flung the comet our way from the Oort Cloud, a distant realm of ice chunks at the outer limits of the solar system.
Whether you're a homeowner who bought an energy-saving refrigerator last year or a company hoping to build a wind farm, the tax package Congress just approved may give you a reason to cheer.
"It's got something in there, a Christmas gift if you will, for almost everyone — American homeowners, workers who commute via transit, and manufacturers of efficient equipment like clothes washers, dryers, refrigerators," says Kateri Callahan, president of the Alliance to Save Energy.
Every year at around this time, tens of thousands of people take part in a kind of bird-watching marathon. From Canada to Latin America and throughout the United States, participants will get up in the middle of the night. Some brave frigid winter temperatures, and many do whatever else it takes to count as many birds as they can in 24 hours.
No matter how old people are, they seem to believe that who they are today is essentially who they'll be tomorrow.
That's according to fresh research that suggests that people generally fail to appreciate how much their personality and values will change in the years ahead — even though they recognize that they have changed in the past.
Daniel Gilbert, a psychology researcher at Harvard University who did this study with two colleagues, says that he's no exception to this rule.
The wind energy industry is dependent on something even more unpredictable than wind: Congress. Hidden in the turmoil over the "fiscal cliff" compromise was a tax credit for wind energy.
Uncertainty over the credit had lingered long before the last-minute political push, causing the industry to put off further long-term planning. So while the now-approved tax credit revives prospects for an industry facing tens of thousands of layoffs, don't expect to see many new turbines coming up soon.