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Why can't we figure out how strong gravity is?Life's Little Mysteries Despite dozens of experiments over the years, scientists still don't have a precise measurement for gravity's strength. Why is that?
7 CommentsLife's Little Mysteries -
Some 'extinct' volcanoes may just be going through a growth spurt, before they 'wake up in this catastrophic stage,' emerging research suggestsAnalysis A volcano that erupted after being asleep for more than 100,000 years is leading more volcanologists to say we must redefine volcano activity to ensure eruptions don't surprise us.
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Doctors couldn't explain why a boy was bleeding from his eyes, ears and noseDiagnostic dilemma A case of a boy who bled from his eyes eventually led doctors to a diagnosis that has been reported fewer than 50 times in the medical literature.
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'Animals were imprisoned in jails where humans were incarcerated': The bizarre trials of the Late Middle Ages — and surprising lack of criminal catsExcerpt Animal trials took place across Europe from the Late Middle Ages until the end of the 18th century. In this excerpt from "Cats: A History", Rod Phillips explores this strange practice, and looks why cats appear to have been largely law-abiding.
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Rusty, orange water 'bleeds' across brilliant Bolivian lagoonEarth from space A 2015 astronaut photo shows dark-orange water that appears to bleed across the bright-white floor of a high-altitude salt lake in the Bolivian Andes.
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Gessel gold hoard: A 3,300-year-old stash of gleaming treasures that's one of the largest Bronze Age hoards from EuropeAstonishing Artifacts The Gessel gold hoard is among the largest treasures ever discovered in prehistoric Europe but has only three pieces of jewelry in it.
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Astronomers gaze into the 'Crystal Ball Nebula' and see a vision of the sun's deathThe Crystal Ball Nebula has captivated astronomers for more than 200 years, and it offers a bittersweet glimpse of a dying star system similar to our own.
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How many generations of humans have there been?Life's Little Mysteries Modern humans have been around 300,000 years. How many generations is that?
7 CommentsLife's Little Mysteries -
What is jet lag, and how can you avoid it?Long-haul travelers often feel totally out of whack for several days after arriving at their destination. Jet lag is a natural phenomenon, but can it be prevented?
