Environment

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The Eruption of Mount St. Helens

The 1980 eruption of Mount St. Helens in Washington State, USA, was the most destructive volcanic eruption ever recorded in the United States.

April 25, 2017 12:31

What Is A Keystone Species?

Keystone species, though relatively fewer in number, play a vital role in maintaining the integrity of an ecosystem.

April 25, 2017 12:31

What Is A Flagship Species?

A flagship species is a species whose profile is raised to leverage more support for biodiversity conservation.

April 25, 2017 12:31

What Is An Umbrella Species?

When an umbrella species is protected in the wild, many other species of the same habitat come under the umbrella of protection, too.

April 25, 2017 12:31

What is a Sentinel Species?

Sentinel species are those who act as indicator of a potent danger to human life by providing advance warning of danger.

April 25, 2017 12:31

What Is That Mysterious Hum?

In areas around the world, a mysterious hum phenomenon has been reported, although the source of the mysterious noise is not always known.

April 25, 2017 12:31

The World's Tallest Dams

An arch dam, the 1,001 feet high Jinping-I Dam is the tallest dam in the world.

April 25, 2017 12:31

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