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August 29, 2018

Where did all of those king penguins go?

(for more about Power Words, click here)

birds     Warm-blooded animals with wings that first showed up during the time of the dinosaurs. Birds are jacketed in feathers and produce young from the eggs they deposit in some sort of nest. Most birds fly, but throughout history there have been the occasional species that don’t.

colleague     Someone who works with another; a co-worker or team member.

conservation     The act of preserving or protecting something. The focus of this work can range from art objects to endangered species and other aspects of the natural environment.

extinction     The permanent loss of a species, family or larger group of [...]

 
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August 28, 2018

A ‘ghost’ gene leaves sea mammals vulnerable to some toxic chemicals

(for more about Power Words, click here)

aquatic     An adjective that refers to water.

behavior     The way something, often a person or other organism, acts towards others, or conducts itself.

biology     The study of living things. The scientists who study them are known as biologists.

birds     Warm-blooded animals with wings that first showed up during the time of the dinosaurs. Birds are jacketed in feathers and produce young from the eggs they deposit in some sort of nest. Most birds fly, but throughout history there have been the occasional species that don’t.

chemical     A substance formed from two or more atoms that unite (bond) in a [...]

 
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August 27, 2018

Body heat due to exercise may reduce hunger

After a long, tough workout, it would seem people should be ravenous. They’ve been working hard and burning calories — energy that must be replaced by fueling the body with more food. So why do most people and animals eat less after exercise? Scientists think they’ve found the answer in certain brain cells that control appetite. When they get hot and bothered, those cells appear to shut down the need to feed.

Young-Hwan Jo is a neuroscientist — someone who studies the brain. He works at the Einstein College of Medicine in New York City. And as an athlete, Jo admits he has a personal stake in studying exercise and appetite. “I run three times a week,” he notes, and afterward [...]

 
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August 24, 2018

Explainer: What is a clinical trial?

Let’s say your doctor prescribes some medicine. Perhaps it’s a pill. If you live in the United States, Europe or many other parts of the world, that medicine will have undergone tests. Before that medicine makes it into your hand, researchers will have ensured that it works well and is safe.

And they did this through clinical trials.

Such research trials always involve human volunteers. The people can be any age, from babies to the elderly. It all depends on who might benefit from a new treatment or behavioral change. Scientists refer to what is being tested in these studies as an intervention.

A clinical trial generally divides its volunteers into two or more [...]

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