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...principle behind face detection is relatively simple, even if the math involved can be complex. Most people have two eyes, eyebrows, a nose and lips - and an algorithm can be trained to look for those common features, or more specifically, their shadows. (For instance, when you take a normal image and heighten the contrast, eye sockets can look like two dark circles.) But even if face detection seems pretty straightforward, the execution isn't always smooth. (See the 50 best inventions...
...there life after death? Theologians can debate all they want, but radiation oncologist Dr. Jeffrey Long says if you look at the scientific evidence, the answer is unequivocally yes. Drawing on a decade's worth of research on near-death experiences - work that includes cataloguing the stories of some 1,600 people who have gone through them - he makes the case for that controversial conclusion in a new book, Evidence of the Afterlife. Medicine, Long says, cannot account for the consistencies in the accounts reported by people all over the world. He talked to TIME about the nature of near...
...human experience that you don't think science can touch? Oh, absolutely. What happens after permanent death - after we're no longer able to interview people - is an absolute. To that extent, the work I do may always require some element of faith. But by the time you look at [the] evidence, the amount of faith you need to have [to believe in] life after death is substantially reduced...
Neither of the new studies is the final word, as the authors plainly acknowledge. In both cases, though, our ever-evolving understanding of what climate change will look like has become a little clearer...
Even oversimplified, it's an extremely complicated thing to figure out. Take sea level, for example. Most studies on climate change talk about the average rise worldwide. But things can look very different when you zoom into specific stretches of coast. Ocean currents can make local sea level higher or lower than the world average. So can the continuing rebound of land from the weight of glaciers from the last ice age, even though they melted more than 10,000 years ago. Factors like the extraction of oil and gas, like in the Gulf of Mexico, can also make...