Uncategorized
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Would-be brain boosters need data lift
Research has yet to confirm that the herb Ginkgo biloba and other nonprescription nutrients enhance memory and intellect.
- Astronomy
More evidence for a revved-up universe
By studying the clustering pattern of galaxies, astronomers have obtained additional evidence that cosmic expansion is accelerating.
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In this article, it struck me that the helicopter lander’s blades might be helped considerably by their undersides’ being dimpled like a golf ball. Those dimples supply significant lift during a ball’s flight. The helicopter wings would seem to benefit in the same way. I suspect that the dimples near the outer radius might be […]
- Tech
Bugs on Mars
Undaunted by the hurdles on flight posed by thin air and a lack of oxygen, aerospace engineers are devising extraordinary flying machines resembling giant insects and windmills to make the exploration of Mars more rapid and effective.
