Sightings

Beekeepers do not only lose colonies in the winter but also throughout the summer, sometimes at significant levels. In the summer of 2014 (April – October), colony losses surpassed winter losses at 27.4% (total summer loss), with summer losses of 19.8% in 2013. Importantly, commercial beekeepers appear to consistently lose greater numbers of colonies over the summer months than over the winter months, whereas the opposite seems true for smaller-scale beekeepers. Beekeepers reported losing 42.1% of the total number of colonies managed over the last year, second highest annual loss recorded to date. more »

Editor's Note: We missed this program when originally presented, but wish to highlight it now when there is reported a review of hostage policy is nearing completion: Diane Foley, mother of executed US journalist James Foley, and Debra Tice, mother of missing freelance journalist Austin Tice, talked with Judy Woodruff, co-anchor and managing editor of PBS NewsHour, about new threats to journalism and press freedom during a program at the Newseum. more »

Adrienne Cannon writes: It is raining in Istanbul on the first day of the tour. Our tour guide sets a quick pace during our visit to the Hagia Sophia mosque, and though I trot along as fast as I can, I fall behind the group. As we exit, I peer through the crowds trying to find the guide who has disappeared in a sea of umbrellas. For a few tense minutes I am alone and lost. Finally our unhappy tour guide finds me and cautions us all not to ever get lost as we will slow up the entire group. What a great beginning to my tour! more »

Because of its universal nature, the droplet computer can theoretically perform any operation that a conventional electronic computer can crunch, although at significantly slower rates. Stanford Engineers, however, have a more ambitious application in mind. "Our goal is to build a completely new class of computers that can precisely control and manipulate physical matter." more »