Friday Nite Videos -- September 4, 2015
Portside
What happened when wolves were reintroduced into Yellowstone National Park in 1995 -- a cascade that embraced animals, plants, birds and even the earth itself.
A huge study -- of 100 scientific papers in psychology, published in high-quality journals -- has failed to confirm the results claimed by about two thirds of the papers. Is this a colossal failure of science? No, say the authors of the study. It's an example of the value of skepticism and the step-by-step, sometimes indirect, process by which uncertainty is reduced.
August 26 is World Dog Day, a good time to reflect on the very reasonable possibility that dogs enabled modern humans to outcompete Neanderthals, and also on the fact that dogs are smarter, more empathetic and more devious than you knew. These days, both ordinary dogs and their ordinary humans can participate in Citizen Science, advancing our understanding of this oldest human coevolution.
Astrophysicist Neil deGrasse Tyson wrote and narrates this video, covering an amazing range of topics in straightforward language. The accompanying music is The Firebird Suite by Igor Stravinsky.
Obesity is one of the biggest public health challenges of the 21st century, affecting more than 500 million people worldwide and costing at least $200 billion each year in the United States alone. It contributes to cardiovascular disease, type 2 diabetes, and cancer. Scientists have now uncovered a genetic circuit that controls whether our bodies burn or store fat. Manipulating that genetic circuit may offer a new approach for obesity treatments.
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