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Vaginas Host Dynamic Battleground for Microbes, Study Finds The human vagina is a lively place, full of beneficial bacteria that discourage nasty microbes from invading. Now, new research finds this ecosystem is even more mysterious than previously realized. Read More

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Monster 'Fleas' Put the Bite on Dinosaurs Paleo-pests about 10 times bigger than today's fleas may have sneaked up on a huge dinosaur, crawled onto its soft underbelly and taken a bite, likely a painful one, say researchers who have discovered fossils of the flealike organisms. The Bigger the Eyes the Faster the Beast, Study Finds The fastest runners in the animal kingdom have some of the biggest eyes for their body size, researchers have found. Turns out, often the bigger the peepers the better the eyesight, which is beneficial when moving quickly. Odd Ways the Mind Warps Time The Stones Speak: Stonehenge Had Lecture Hall Acoustics