The Internet retailer has acquired Touchco, a New York start-up, according to a person briefed on the deal. Read more..

By NICK BILTON and BRAD STONE - The New York Times

Problems with other Toyota models have owners of the Prius wondering about the safety of their own vehicles. Read more..

By JESSE McKINLEY - The New York Times

How do I know if I currently have the 32-bit or the 64-bit version of Windows 7, and how can I find out if my PC can run the 64-bit edition? Read more..

By J. D. BIERSDORFER - The New York Times

Ray LaHood , the plainspoken transportation secretary who told Toyota owners to stop driving the vehicles with pedal problems, became an advertisement for the virtue of remaining scripted. Read more..

By MARK LEIBOVICH and MATTHEW L. WALD - The New York Times

Singapore has high hopes for its two new casinos, but its tight restrictions on junket operators and high entry fees for local visitors could hurt business. Read more..

By SONIA KOLESNIKOV-JESSOP - International Herald Tribune

President Obama ordered the rapid development of technology to capture carbon dioxide emissions from the burning of coal. Read more..

By JOHN M. BRODER - The New York Times

The Russian finance minister floated a new approach to catching up with the West in technology. Read more..

By ANDREW E. KRAMER - The New York Times

With laptops and expertise, volunteers organized by a group called Crisis Commons have created open-source technology tools for aid relief and recovery in Haiti. Read more..

By RIVA RICHMOND - The New York Times

Time Warner’s chief executive, Jeffrey L. Bewkes, said the results suggested that “industry trends are going our way.” Read more..

By TIM ARANGO - The New York Times

The government has made changes in the Troubled Asset Relief Program to get more small-business lenders to sign up. Read more..

By SEWELL CHAN - The New York Times