Next, he looked into the source of the water and found that it came from the polluted river. Finally, the source of water was cxamined and cholera was controlled. 2. Cholera is a problem but can be prevented due to John Snow. Meanwhile, he changed the way scientists study diseases. ...
Somebigscientificdiscoveriesaren'tactuallydiscoveredbutborrowed.That'swhathappenedwhenscientistsdiscoveredproteinsfromanunlikelylender:greenalgae(绿藻),whosecellsaredecoratedwithproteinsthatcansenselight.Thelight-sensingproteinpromisedthepowertocontrolneurons(神经元)byprovidingawaytoturnthemonandoff.Suchability,firstnotice...
Some philosophers argue it's morals or ethics. While some scientists assert it's our greater cognitive development, but I argue that the main difference is our desire to combat routine. This makes being creative a biological manda...
Maya Dangerfield
Spread of the coronavirus has exposed troubling problems at fur farms and how we respond to outbreaks there.
Scientists have long wondered what benefit zebras might get from their fancy black-and-white coats.Those stripes(条纹) may be most useful as protection from biting flies,a recent study concludes. Biologists studied zebras and other closely related African animals.They tested five popular ideas about...
A. Growing evidence of mental problems linked to loneliness.B. Some research results about the relationship between cancer and loneliness.C. Some studies showed that people who suffered from loneliness fell ill or died more easily than those who didn’t....
stress is necessary.Without stress, we would never learn anything or grow or change.We would probably be bored to death.But too much stress can hurt you.It can weaken your body’s protection so that you are more likely to catch diseases.It can even make you more likely to have an accid...
For decades, scientists thought of the brain as the most valuable and consequently most closely guarded part of the body. Locked safely behind the blood-brain barrier, it was broadly free of the harm of viruses and the battles started by the...
41. Scientists who persisted in research without receiving a grant made greater achievements than those who got one with luck, as suggested in one study.答案:F) In a study published in Nature Communications…42. A research paper...