Our water pipes crawl with millions of bacteria

Researchers from Lund University in Sweden have discovered that our drinking water is to a large extent purified by millions of "good bacteria" found in water pipes and purification plants. So far, the knowledge about them ...

Which is most valuable: Gold, cocaine or rhino horn?

Many of the world's largest herbivores—including several species of elephants, rhinoceroses, hippopotamuses and gorillas—are in danger of becoming extinct. And if current trends continue, the loss of these animals would ...

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