Science

What are website cookies?

dr universe

What are the cookies used on gadgets? —Lydia, 8, Essex, England Dear Lydia, A cookie is a tiny file of text that gathers information about you as you browse the web. You might be familiar...

Science

What are website cookies?

What are the cookies used on gadgets? —Lydia, 8, Essex, England Dear Lydia, A cookie is a tiny file of text that gathers information about you as you browse...


Science

Why do people get cancer more than they used to?

Why do people and animals get cancer more than they used to? —Michael, Ceres, CA Dear Michael, A hundred years ago, human beings only lived to be about...


Science

Wild chimpanzees drink and get tipsy, just like humans

Humans everywhere have been known to drink alcohol if they can get their hands on it. And researchers have long suspected that our ability to metabolize ethanol (or...


Science

Scientists debate weight of heaviest dinosaur, Dreadnoughtus

  Dreadnoughtus, announced last summer to be the largest — or at least heaviest — animal ever known to walk the Earth, is under fire. A paper...


Science

Why do we get jealous?

Dr. Universe: Why do we get jealousy? I can feel it sometimes, too, but I don't know why. — Hailey, 10, Ontario Cats love attention, but we...

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