Even just the word Ebola is kind of terrifying. Why? Hollywood has a lot to do with it. But Ebola outbreaks also have all the ingredients for what one psychologist calls the "dread factor."
Look up at the night sky and ask, "Anybody there?" Then consider this answer (from the 1830s): There are 22 trillion individuals in our solar system.
Thousands of Chinook salmon are struggling to survive in the Klamath River, where waters are running dangerously low and warm. Cold reservoir water is instead going to farms in the Central Valley.
By analyzing the DNA found in 1,000-year-old mummies, scientists found evidence that sea mammals were the first to bring tuberculosis to the Americas.
A new study finds cancer affects even simple, ancient multicellular organisms — which means the disease and the deaths it causes may simply be a part of life.
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