Audie Cornish looks ahead to the week's tech news with Laura Sydell. They discuss the new Yahoo CEO, Marissa Mayer.

The Pew Research Center's Project of Excellence in Journalism today puts some numbers behind the trend. It confirms that especially when natural disasters have happened or there's political upheaval, the video site has become a must-see source.

Apple is rejoining a widely used registry of environmentally friendly electronic devices. The surprise move comes after the company received harsh public criticism for turning its back on its green environmental image.

Apple announced Friday that it is rejoining a widely-used registry of environmentally-friendly electronic devices called EPEAT. That's after pulling out of the registry just last week. The company had come under harsh criticism from those who said the company was turning its back on its green environmental image. Melissa Block speaks with Wendy Kaufman about Apple's decision.

California lawmakers gave the green light to the first phase of construction of high-speed rail in the state. Does this mean that America is on track for faster, sleeker trains? What potential speed bumps still lie ahead? Railroad engineer Christopher Barkan discusses the costs, benefits and state of the technology.

Researchers have found a fridge-free way to store vaccines and antibiotics. Biomedical engineer David Kaplan, senior author of the study in the Proceedings of the National Academy of Sciences, discusses how heat-sensitive drugs wrapped in silk stay effective for months at high temperatures.

Tanglewood, the summer home of the Boston Symphony Orchestra, is celebrating its 75th anniversary. To celebrate, the BSO is streaming a different historic Tanglewood concert on its website every day for 75 days.

Mobile apps are aggressively placing unwanted ads on phones. Lookout, a mobile security firm in San Francisco, tested mobile apps and found some disturbing practices. Those include transmitting consumer phone numbers and email addresses and transmitting to third parties and placing ads on the mobile phone's desktop.

For the first time, more than half of adults 65 and older are using the Internet. Pew Center data shows that trend really picked up in the past year, particularly with help from offline outreach to senior citizens. Besides, few grandparents can resist a wall full of family pictures.