This year, scientists gleaned new insight into the day the dinosaur-killing asteroid crashed into Earth 66 million years ago, and the first million years after the impact.
Oliver Sacks: His Own Life
On January 15th, 2015, a few weeks after completing his memoir, the writer and neurologist Oliver Sacks learned that the rare form of cancer for which he had been treated seven years earlier had returned, and that he had only a few months to live. One month later, he sat down with director, Ric Burns, for a series of marathon filmed interviews in his apartment in New York.
Burns explores Sacks’ life and work as the renowned thinker shares details of his battles with drug addiction, homophobia, and a medical establishment that accepted his work only decades after the fact.
Over the course of her career, Mary has studied the ecosystems of four different rivers. Her work to understand the food webs in those rivers has involved observation and taking field notes, mapping and quantitative observations to identify patterns, developing questions and hypotheses, and then testing her hypotheses with experiments.
Due to over-fishing and dams, wild salmon have declined by 90% in Washington, Oregon and California. That decline has a much broader effect than what might be expected. Salmon need forests for shade, to keep streams cool, and forests need salmon to provide between 25% and 50% of their nutrients, particularly nitrogen essential for protein production.
The documentary film, “Our Gorongosa: A Park for the People,” will have its United States premiere at 8 p.m. on Tuesday on Idaho Public Television.
Rise of the Mammals
The course of life on Earth changed radically on a single day 66 million years ago. An asteroid blasted our planet, causing the extinction of up to three quarters of all plant and animal species. The impact ended the Age of Dinosaurs and launched our age, the Age of Mammals. But our understanding of the asteroid's aftermath has been spotty. Who survived? How quickly did mammals and their habitats spring back? How did our planet recover from this global cataclysm?
Ever wondered how life on Earth evolved after a giant asteroid wiped out the dinosaurs some 66 million years ago? In a special edition of PBS's NOVA, titled "Rise of the Mammals," scientists from the Denver Museum of Nature & Science reveal findings from a major discovery of fossils that help provide a timeline for the first million years of mammal life.
...Sahithi has already earned a top award at an international science fair and was profiled in the documentary Inventing Tomorrow.
For the first time, the researchers were able to establish animals, plants, temperatures and a timeline of when they occurred, providing an overview of the first million years after the mass extinction event to see how the entire ecosystem recovered.