Ener1 Inc., which owns an electric car battery-maker that reaped a $118-million grant from the Obama administration, filed for bankruptcy protection Thursday. The New York-based company claimed defaults on its bond debt were spurred by rising competition from China and other countries. Ener1 listed $73.9 million in assets and $90.5 million in debt as of December 31 in Chapter 11 papers filed in U.S. Bankruptcy Court.

As environmental groups hail President Obama’s rejection of the Keystone XL pipeline, billionaire and prominent Democratic donor Warren Buffett (left) is set to reap a handsome reward from the decision. Buffett’s Burlington Northern Santa Fe LLC is a notable beneficiary — among other U.S. and Canadian railroads — of the move, as it is one of the railroads that will transport the Canadian oil if the pipeline isn’t approved.

House Republicans unleashed a barrage of criticism Wednesday during a House hearing on Chevrolet’s Volt electric car, after the head of the federal auto safety agency insisted that the vehicles are not dangerous. "The Chevrolet Volt is safe to drive and it has been safe to drive the whole time," David Strickland, head of the National Highway Traffic Safety Administration (NHTSA), told a congressional panel. "Not only would I drive it, I would [take] my wife, my mother and my baby sister along for the ride."

Do you think anthropogenic global warming is a hoax? Are you unconvinced that your ancestors had more in common with Cheetah than with Tarzan? Have you any doubts about the official version of how 9/11 went down? Then you, according to Evgeny Morozov, are part of a “kooky” “fringe movement” whose growth must be checked by forcing you to read “authoritative” content whenever you go looking for information on such topics on the Internet.

A coalition of hacker activists known as “Anonymous” — styling itself a “hacktivist” collective that fights for Internet freedom — took credit for bringing down websites belonging to the Department of Justice (DOJ), the Federal Bureau of Investigation (FBI), the U.S. Copyright Office, and multiple heavy-hitting industry association sites. Most of the websites were back online by Friday morning.