This week solar flares sent a huge blast of X-rays and charged particles screaming towards the Earth. Solar astronomer David Hathaway and physicist Doug Biesecker discuss the sun's explosive behavior, and how that 'space weather' affects satellites, airplanes and the electric grid.
Imagine walking into Jamba Juice for your favorite smoothie fix, and when it's time to pay, instead of pulling out cash or a credit card, you just tap your phone on a reader, and you're ready to go. Better yet, when you tapped your phone to pay it, it also redeems an electronic coupon stored in your phone, so you end up paying even less. Yeah. Well, people in fact can already do this at Jamba Juice using Google Wallet on certain Android phones. You can use it at Macy's, Bloomingdales, Duane Reade.
So how many people have human papillomavirus in their mouths?
Quite a few, say researchers who got more than 5,000 volunteers across the country to spit into a cup and answer detailed questions about their sex lives.
The bottom line: 6.9 percent of people in the U.S. (ages 14 to 69) have oral infections with HPV. Some types of HPV are linked to cancer and genital warts.
Glory Ndudi, a Christian, and her five children board a bus headed out of town on Wednesday. The recent bomb attacks that have targeted churches in Kano, Nigeria, have led to an exodus of Christians from the city.
Credit Sunday Alamba / AP
A radical Islamic group, Boko Haram, carried out a series of bombings in Kano, in northern Nigeria, including an attack on police headquarters, shown in this photo from Jan. 22.
The New Road bus station in the heart of Kano is a scene of bedlam.
Men, women and children are milling around, with huge bundles and baggage in all shapes and sizes, waiting to be loaded onto half a dozen buses. Others are already onboard. They're in a desperate hurry to head south, leaving behind this troubled city in the north of Nigeria.
