科学与环境
Dinosaur blood—oldest discovery rewrites what fossils can reveal about the past
来源: Phys.org - latest science and technology news stories · 发布于
An international research team led by Curtin University has for the first time uncovered unequivocal evidence of fossilized red blood cells and amino acids of collagen, reshaping our understanding of fossil preservation and molecular longevity in deep time.
An international research team led by Curtin University has for the first time uncovered unequivocal evidence of fossilized red blood cells and amino acids of collagen, reshaping our understanding of fossil preservation and molecular longevity in deep time.
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Blood chemistry reveals why some animals bleed blue, green or purple
Whether it's gushing from a bumped nose or pooling atop a pricked finger, our blood is some hue of red. But red-bloodedness isn't universal in the animal kingdom. In some creatures, the vital fluid is purple; in others it's yellow, green or even white.
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Googling "Zelda" today offers a glimpse of how search worked in 1998
The year was 1998. Britney Spears topped the charts, Bill Clinton was impeached, and a couple of little websites called Google and Ars Technica came online. It was also the year Nintendo released The Legend of Zelda: Ocarina of Time on the Nintendo 64. Google, which has come to d
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A simple blood test could reveal Alzheimer’s risk 10 years before symptoms
A major international study found that a simple blood test could help predict Alzheimer’s-related cognitive decline years before symptoms appear, with the highest-risk individuals facing a 38% chance of impairment within five years and an estimated 78% chance within 10 years. Sci
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BBC Inside Science
Time is running out for one of the most ambitious environmental pledges in history.
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Your blood pressure could be dangerous even when your numbers look normal
Researchers have discovered a small group of brain cells that prevents dangerous blood pressure swings, even when average readings appear normal. The finding reveals a hidden source of cardiovascular risk and could open the door to new treatments that protect the heart and brain.
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