Month: December 2015

Enlarge / Hillary Clinton. (credit: Clinton campaign.)

Presidential candidate Hillary Clinton has called for a "Manhattan-like project" to help law enforcement break into encrypted communications. This is in reference to the Manhattan Project, the top-secret concentrated research effort which resulted in the US developing nuclear weapons during World War II.

At Saturday's Democratic debate (transcript here), moderator Martha Raddatz asked Clinton about Apple CEO Tim Cook's statements that any effort to break encryption would harm law-abiding citizens.

"You've talked a lot about bringing tech leaders and government officials together, but Apple CEO Tim Cook said removing encryption tools from our products altogether would only hurt law-abiding citizens who rely on us to protect their data," Raddatz said. "So would you force him to give law enforcement a key to encrypted technology by making it law?"

Enlarge / Kangiata Nunata Sermia, Greenland. (credit: Nicolaj Krog Larsen, Aarhus University, Denmark)

Past performance may not always predict future results in the stock market, but in the Earth sciences, it can tell us a hell of a lot. Since we only have the one planet, examples of some processes can only be found in the past. That’s why so much effort goes into studying the past behavior of the Greenland and Antarctic ice sheets. We need context for what we’re currently seeing and some ideas about what’s likely to happen next.

While many studies look tens of thousands or even millions of years into the past, much more recent histories can also be of interest. We’ve only had satellites measuring changes in the Greenland ice sheet since the early 1990s, so what happened over the preceding century is much less clear. That makes it difficult to answer questions about Greenland’s contribution to the full century's sea level rise or the ice sheet’s natural short-term variability.

But in a new study, a team led by Kristian Kjeldsen and Niels Korsgaard of the University of Copenhagen has managed to fill in this gap through some clever, if tedious, research. They took advantage of a trove of stereo aerial photos taken in the late 1970s and 1980s as part of a survey of Greenland.

(credit: Getty Images / NBC Universal)

Jennifer Thompson and Ronald Cotton have every reason to be enemies.

In 1984, an intruder broke into Thompson’s apartment and raped her. She identified Cotton as the rapist in both a photo array and a live lineup. Although Cotton proclaimed his innocence, he was arrested, tried, and convicted. The prosecution’s case rested mainly on Thompson’s identification, and during the trial she testified that she was “absolutely sure” Cotton was the man who raped her. Cotton was sentenced to life in prison plus 54 years.

But 10-and-a-half years later, things changed drastically. Cotton was exonerated based on DNA evidence that showed that a man named Bobby Poole had raped Jennifer Thompson. In a hearing that occurred after Cotton’s trial, Thompson was shown a picture of Poole. She said “I have never seen him in my life.”