Mysterious "blobs" deep inside Earth are "buried relics" from collision 4.5 billion years ago with another planet, study suggests
CBSN
Scientists proposed a novel idea on Wednesday that could solve two of the world's mysteries at once — one that passes over our heads every night, and one that sits far below our feet.
The first mystery has puzzled everyone from scientists to inquisitive children for millennia: where did the moon come from?
The leading theory — known as the Giant Impact Hypothesis — is that the moon was created 4.5 billion years ago when a would-be planet the size of Mars smashed into the still-forming Earth.
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New research suggests that removing fluoride from public water would increase dental care costs and tooth decay for children across the United States.
Colon cancer patients saw improved survival rates after a 3-year exercise program, according to a first-of-its-kind international experiment.
WINDOW ROCK, Ariz. — Navajo Nation leaders took turns talking with the U.S. government's top health official as they hiked along a sandstone ridge overlooking their rural, high-desert town before the morning sun grew too hot.
It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers say the strange, clustered orbits of icy rocks beyond Neptune indicate that something big is out there, which they have dubbed "Planet Nine."