How close is too close for encounters between sensitive spacecraft orbiting Earth? With a mysterious approach to another satellite, Russia’s military may be trying to find out ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American For some years now, a prolific amateur ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American According to a popular Japanese myth the ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The following is a guest post by Dr. Joshua ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Thirty years ago, on February 14, 1990, the ...

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This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American “And yet it moves.” This may be the most ...

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First, some basic facts to convey the scale of the problem. Cancer is the second most lethal disease in the U.S., behind only heart disease. More than 1.7 million Americans were diagnosed with cancer ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Autumn Kent is a mathematician at the ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American A couple of years ago, my family arrived on ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Since 1990, the fraction of Americans with no ...