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Earlier this week, hundreds of thousands of revelers huddled together under the pouring rain in Times Square for an annual tradition: to watch the New Year’s ball drop. But once the clock struck midnight, the song was sung, and the loved ones were kissed, all anyone wanted to do was get out of there. The problem? How does a mass of 100,000 people move out of a few square blocks in midtown Manhattan? Luckily, scientists are studying this type of problem. Stanford University professor Nicholas Ouellette joins Ira to discuss the weird world of crowd movement.

From low-carb, high protein, calorie counting, there are all sorts of diets that claim to help you lose weight. But how do all of these guidelines affect our metabolism and bodies? A study out in the British Medical Journal found that a reduction in carbohydrates increased energy expenditures. Endocrinologist David Ludwig, an author on that study, talks about the role carbohydrates, fats, and proteins play in regulating our metabolism and how we might rethink our calorie counting.

Plus: Lake Tahoe scientists are enlisting local citizens to better understand winter storms. Capital Public Radio's Ezra David Romero joins Ira in the latest edition of The State Of Science.

And FiveThirtyEight's Maggie Koerth-Baker tells Ira about China's Chang'e-4 mission and other top science stories in this week's News Round-up.

 

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